When you say it will be back, to what degree? Are we looking at 100k cases/day in the US? 1k deaths/day? Do you think the vaccines are ineffective against the Indian variant, or do you think we won't have enough people vaccinated?
Judging by the UK & Israel data it seems clear the US will hit 100k cases/day soon. (Your prediction of a fourth wave will materialize just after it seemed to have been off table). I would say very likely 500 deaths/days and possibly 1000-1500, the main variable is how the new wave will influence vaccination hesitancy.
Israel is doubling every 2-4 days. UK is at 150 cases per million today while the US is at 35. The US has better vaccines but less quarantine adherence and etc
Interestingly, the UK still has less new hospitalizations, likely because the US has larger pockets of unvaccinated people whom are hit harder than the UKs Delta variant hits vaccinated people.
It's easy to blame the politicians, but the real problem is they aren't responding fast enough.