I look at it this way.
First, it doesn't look like he is looking at guns that are P.O.S., so if he wants to sell it later if he doesn't like it, he could still get a fair price out of it.
Plus, no matter what he buys,
he just bought a new gun. At least he has one and can learn how to use it. That's the most important thing.
And I might catch some flak for this, but I don't think that you necessarily need to go to Gunsite to be able to defend yourself with a firearm in your own home. If you're going to be carrying in public, then I think that you should take it upon yourself to get a higher level of training whether by just practice or by adding classes to the mix. But, my wife isn't that interested in shooting and with a new baby here, we don't have much time anyways. She has shot a few shots out of my Ruger P-89 and is a pretty natural decent shot. She doesn't care how it works, how to take it apart, how to clean it, etc. It is loaded to the gills, and all you have to do is pull the trigger and it goes 'BANG' every time. It's kept in a touchpad gunsafe under her side of the bed. She'll probably never need it. But at home defense engagement ranges, with 16 rounds of 9mm CorBon, I'm glad she has it available if she needs it. Point with two hands and pull the trigger until the threat isn't moving anymore. I did make sure she knew how to decock it and she knows how to safely handle a gun.
Would I prefer that she enjoyed shooting like the rest of us do? To realize that you should practice clearing jams, and reloads? Of course. I'd love for her to ask "When's the next time we're going to shoot?" but it's not something she's interested in, just as I'm not interested in some of the stuff that she likes. But I'd rather have the option available to her if the SHTF when I'm not there. I don't practice and train with a fire extinguisher in case there is a fire, but I know how they work and could get the job done if need be.
I guess the point is, if the gun is stored safely and there is a basic familiarity with the gun, then another gun in the home can never be a bad thing. At least one is there.