Disagree completely.
As long as people are aware that things can change very quickly, then it's a great time to crack on.
You'll never get the hotels and resorts as quiet as they are at this peak travel window, often at prices that you'll never see again for summer travel, so make the most of it I say.
All being well I've got Zante next weekend, Gran Canaria end of Sept and Zante again early October.
Fingers crossed they all go ahead but I won't lose my shit if they don't.
All 3 are only short breaks as well and with the travel announcements seemingly every Thursday we shouldn't be caught short in that respect (IE we'll know before travel if quarantine is in place, and then obv won't go, advice shouldn't change when out there)