For those saying he is stupid for not telling others that he has 100 sp in recovery, other than the ones he grouped with, majority of the others would likely not even believe him.
Most adventurers have only 20-30 points in their specialty when they are high in level (Since they all start with low stats normally), so you think they would believe a fella claiming he had 100 recovery points and 50 evasion points when he is only a beginner adventurer? At 50 points, they are considered masters in that field.
Plus, there is the problem of what would happen if the king found out he had 100 points in recovery already. You think the king would let the MC roam free? (He's already trying to get him assassinated). It would be detrimental to mention how high his recovery points are.
Is he making the best choices? No, but going around blabbing something that shouldn't be blabbed about would be even worse. Just my thoughts on it.