In all fairness a nut is not a bodge and may well be safer than a heicoil or time sert

If you have the old thread heicoiled then the hole will end up bigger and material will be removed which could weaken that part of the upright ( probably won't tho )
A rime sert will remove even more material

So a good quality nut and bolt would more likely be classed as a needed fix not a bodge
It just won't look std which is what some Poeple want to se