I think standardized tests will stay around. I feel like many colleges will permanently go test-optional to make it fair to students who may not have the ability to take the test. Standardized tests are also not the best gauge of a student’s college ability, as many people are bad test takers (on the ACT/SAT) but still receive great grades in high school.
It wouldn’t be fair, however, to students who do want to go the extra mile to take tests and essentially “prove” to colleges that they do fit there.