Fins and such are only a minor eyesore. You can deal with that as the cars do look better now being wider and with the new lower rear wings. It compensates in a way.People were very vocals in complaining about fins and T things this season. After a few races they did not care anymore.
Whenever there is something new, people claim that it is too ugly, that it spells the end of F1, that they wo'nt watch any race any more, etc. And the following season they say the same thing.... ^^
But nothing compensates for HALO's ugliness to be honest. It looks totally ridiculous.