Earlier quoted context omitted.
Given that they are physicists and no one has actually been able to properly find an alternative to string theory isn't that what they're supposed to be doing? Isn't the main alternative LQG which is apparently a dead end?
In any case this is not how science works, you do theoretical physics by publishing in peer reviewed journals and your peers decide whether what you are doing is worthwhile or not. Both Smolin and Hossenfelder have been somewhat successful in doing so themselves, but Hossenfelder specifically didn’t manage to secure a professorship for various reasons and I am sure she has some axe to grind (again probably partially…
No, science is not the act of publishing in a peer-reviewed journals, science is using past observations to make models that predict future observations, and then evaluating those models after making the future observations. Peer review is just the industry standard quality control mechanism.