Linters often don’t provide the constraints you desire. While they’re a great (arguably essential) tool, they often are not sufficient.

When a project has well-established patterns, part of the job is to just follow the pattern, whether you like it or not, until you find a reason to 1) change the pattern everywhere, or; 2) make an exception to the pattern with intention.

It's quite simple to write a rule, e.g. for the example I shared https://typescript-eslint.io/rules/array-type. But I've never seen any reputable project arguing against T[] for simple types. In my opinion, that says a lot about the reviewer, not the contributor. If a linter rule doesn't exist, you should argue against the idiomatic convention.

Write a lint rule. It's often quite easy.