I would ask, what does this pistol do that a currently possessed pistol wouldn't? There are no solutions, only trade-offs.
Compared to even the micro 9mms like the P365 and Shield Plus, the BG 2.0 is a fair bit smaller, and ~40% lighter in weight. This allows it to better fulfill roles like pocket carry (with a pocket holster) and back-up ankle carry. If you're going to primarily belt carry, the advantages will be less pronounced.
If that means that you'll have the BG 2.0 on you at all times when a bigger gun might be left at home, then that's a benefit. I like to say that the first rule of a gunfight is, "Have a gun." If it replaces a single stack .380, not too many people wished that they had fewer rounds in a gunfight.
.380 hollow point ammunition in general, has difficulties expanding reliably in bare gel and heavy clothing tests and meeting the FBI 12-18" penetration standard. This becomes even more true with the average 2.9" long barrel .380 pistols that most people are carrying instead of the 3.5" test barrel length that manufacturers publish specs around.
Even Federal's HST, which is a great round in duty pistol calibers, is marginal in meeting the 12" penetration minimum in bare gel, and is inconsistent at expanding in heavy clothing tests. I will whole-heartedly recommend HST 9mm, .40 S&W, and .45 ACP all day long, but have to apply caveats to the .380.
Some will say, "10-12" is perfectly fine, torsos arent that deep!" but this misunderstands the test medium design. The gel is a simulant for muscle tissue, and human bodies are also constructed of more durable and elastic tissues like skin, bones, and ligaments. Then there's the idea that you want to be able to shoot through the arms, and in to the torso of an attacker pointing a weapon at you, even if the attacker is not squared up like a silhouette target. The much-derided Winchester Silvertip 9mm used by some FBI agents in the 1986 Miami shootout stopped 1" shy of the heart of Michael Platt after first going through his right upper arm. It was an eventually fatal shot, but he didn't bleed out as quickly as if it had gone through his heart and was able to inflict more harm.
Now, with that in mind, some people who carry short barrel .380 and .38 Special handguns decide to emphasize penetration depth over expansion when it comes to ammunition selection.
With .38 Special, we don't have to worry about feeding from a magazine, so some people favor wadcutters due to the sharp leading shoulder of the projectile causing more tissue damage than round nose ammunition FMJ and some unexpanded JHPs, while still penetrating deeply enough.
However, with .380, we do not have that option, because we have to be concerned about feeding from a magazine. From the various tests I've seen, Hornady 90gr FTX Critical Defense seems to be the most reliable .380 JHP, with SIG V-Crown not too far behind. They're still on the low end of that 12-18" penetration depth. If you'd prefer to get that guaranteed vital penetration depth even through arms, you might prefer an older JHP that's very unlikely to expand from a short barrel like Federal Hydra Shok, Winchester Ranger T, or Remington HTP. There may still be more potential wounding capability than round nose FMJ.
We all have to make our own decisions, but I would not be concerned if a bullet makes it a bit over that 18" penetration depth. We're not talking about heavy hardcast or bonded 10mm hunting loads here. Any big city trauma nurse can tell you about recovering 9mm bullets that punched straight through a patient only to be stopped by the clothing on their other side, and 9mm FMJ can be good for 24"+ of gel penetration. Overpenetration may get you sued, underpenetration may get you killed like FBI Agent Jerry Dove.
Summary: If the BG 2.0 leads you to always be armed, that is better than not having a gun. .380 does involve terminal ballistics compromises, but can be, and has been, effective. The BG 2.0 has generally been regarded as very easy to shoot for a sub 10 oz .380, but it is a very lightweight pistol at the end of the day, and everyone's hands and recoil tolerance are a little different. Another potential issue is that it is still early in the product history; sometimes problems become apparent later on, or bugs have to be worked out when production is scaled up.