I never had a trip booked for this year. BUT I highly doubt the cancelling of the expo and events at the host hotel will stop people from celebrating gay days in the parks. Everything at the host hotel is more geared towards partying. But there are a vast amount of LGBTQ people who do the red shirt days at the parks without ever stepping foot at the expo or going to the pool parties.
I'm certain there will still be plenty of folks at the parks celebrating for red shirt days, as that tradition in orlando dates back before Gay Days was the massively organized thing it is today. It might be less people this year because 1. pandemic travel restrictions 2. other gay days events were cancelled so some ppl may have decided to nix the trip 3. the park reservation system may restrict people making a last minute decision on going.
I know Magic Kingdom day is Saturday and I expect you will still see plenty of happy LGBTQ people in the park, decked out in red/pride gear that day =)
