I don't recall tyres affecting the rear wing size. They couldn't use the Baku rear wing any more after the tests were clarified. Zak admitted as much during the race.
Don't forget Mercedes were also accused of in "watergate" and they haven't been affected. Also don't forget that there was NO PROOF of any team actually doing what Red Bull accused them of.....in fact the only team we KNOW ever did it WAS Red Bull in previous seasons (by their own admission).