they definitly need to help new players better. i have seen someone pick weapon master with his rogue to increase his dex from 16 to 17 and get proficiency with daggers shortbows and rapiers.
these choices obviously gave him literally nothing. but if you are a new player and just read the tooltips they have, it makes sense:
they just tell you that dex is a good stat to increase and that getting proficiency in these weapons adds the prof bonus to attacks
it doesn't tell you that putting 1 point into an even stat gives you nothing or that you already have proficiency in those weapons.