Will SO2 impede age? I don’t think so.
From what I have read much of the ageing process is complexing tannins to make longer chain molecules which will fall out., (Concepts in wine Chemistry, Margalit) , , , it is desirable to have the oxidation reactions run slowly since an excessive oxygen environment will cause metal ions to react and the desired age/ tannin reactions don't happen. In a bottle, Cork corks have the ability to breathe some, so slow oxygen based oxidation can occure and age is expected to rear it’s head faster. In a carboy/ stainless steel we assume no oxygen transfer therefore age is slowed down. Barrels or stainless steel tanks with micro oxygenation are used to produce the desired slow oxygen aging.
Taste, we each have different levels of sensitivity, my wife and some of the gals in the vinters club will pick it up before I do. Age consumes SO2.
As a home wine maker my quality has improved since I started to assume no residual SO2, , (that said reds have enough anti oxidant that I expect some SO2 even if I am sloppy) , and as a routine put 25 ppm/0.474gm per 5 gallon in a carboy (1 Camden tablet). , , , oxygen will probably do more damage. I try to avoid exposure knowing that on a 5 gallon batch size the percentage risk is significant.
Your friends will like your vintage.
Yup a blind tasting in a contest may pick up defects, give a red ribbon.