Should I keep the default tap delay?

Since I read 300ms tap delay, gone away I always figured it was a good thing.

Now a colleague recenctly told me they was against this because as it is the default behavior it is “accessibility” to keep it.

They also didn't see any problem with the delay and that they liked the double-tap zoom.

Now I never considered things that way so are there some studies which could back one claim or another?