Fitted for clubs, do I trust it?

So I just went for a fitting.

I play 1/mo at most and play bogey golf. When I have played consistently I have gotten down to maybe 13-14 handicap (which was years ago).

I got fitted for ping i530’s xstiff shafts 115gm. 7 iron 173 total distance ball speed 115 spin 5500 and smash factor 1.28.

Am I really supposed to be playing x stiff?! NEVER would I have thought I’d being getting more stiff. No pun intended. Maybe

I asked if I should be playing game improvement clubs since I play so little, and the club fitter was like “no way with your swing speed”. What? Really? Is not shit handicap in the big game improvement category?