Respecin is great so I can take full advantage of ability raising magical items and it gives nice flexibility to adjusting your companion build to more your liking. I only wish that Larian would give as ASI every fourth level no matter how you multiclass because only two ASI if multiclassing is not fun and Larian is all about us having fun.
I know what are the convenences of having unlimited respeccing.
I just happen to think that not just because something is convenient is also for the better.
I value the appeal of making long lasting decisions and feeling the weight of their permanence.
Dropping a bunch of +10 weapons would be super-convenient as well, but it would absolutely wreak the balance of the game.
That aside, I don't know what you two are even going on about, because that specific quote wasn't just about "respec" but more specifically about being able to change the starting class of companions.
Something I remain adamantly against, no matter how many silly and contrived excuses people will throw at me to argue I should enjoy.