In my 30+ years of bass playing with heel-adjust Fender Ps and Js, combined with working in guitar shops as Service Manager for years, doing instrument setups and repair privately, and having loads of vintage heel-adjust Fenders of all types on the bench: never once have I encountered stripped neck mounting holes. Not to say that it can't happen but it's pretty unlikely with Maple as long as the work is done properly.
You don't need to physically remove the neck to adjust the truss rod. Loosen the strings until they are slack, capo at the 1st fret to keep the strings seated and in-line, loosen the neck mounting screws approximately 4 or maybe 5 turns each until the neck is free in the pocket but screws still planted in the neck. All you need to is just enough room to turn the truss rod nut safely without marring your instrument and this should give you plenty of room. If you're concerned about slipping and damage, a couple layers of masking tape in the general area will provide enough protection. Make your adjustment, turn the screws back in the rest of the way, make sure the neck is in proper alignment and tweak if needed, tune up ...good to go!
Threaded brass inserts into the neck are always an option too and with this you'll never have to worry about it. I've read of tone and sustain enhancement this way but have never felt the need to do it myself nor have I had a customers instrument that required it.
I'm sure others will chime in on this but personally I wouldn't worry about it at all.
