It's actually not. You're ignorant on the matter, and so was the previous long time, blithering on poster who condemned it.
Seems some people need some remedial reading lessons.
I presume I am the "previous long time blithering on poster who condemned it" - it being using a BB gun for shooting practice.
If you bother to really read what I said (as opposed to reading something INTO what I said) I never condemned BB gun practice, nor did I say it wouldn't improve trigger or sight picture practice. Obviously it will.
What I said is that it is NOT a substitute for practice and familiarity with the REAL firearm you plan to use to defend yourself and/or your loved ones. Especially for a NEW shooter with their first gun that they just bought.
Now, if you want to demonstrate real ignorance by attempting to argue that it is, have at it.
I have shot a lot of pellets and BBs myself. Helped me with a lot of the fundamentals. Didn't help me become proficient with the handgun I carry every day for self defense though. Never will either.
You may improve your draw and fire times with a BB or airsoft gun, but you are NOT going to improve your second shot times OR accuracy, because you have to practice those skills while dealing with RECOIL, and a BB or airsoft gun DOESN'T HAVE ANY.
Every new gun owner needs to put a few hundred rounds down range to develop proficiency at shooting a real firearm AND to prove the reliability of that new gun. Trying to argue otherwise is simply foolishness. Or possibly ignorance. Take your pick.