I think they do ask you what you are planning to use the resources for, what your qualifications are and make a decision to allocate and how many tpus based on that.
Yes, they do but it's not really a grant and they don't really follow up on what you do unless you contact them yourself. You just fill a form and if you get accepted get an email later with access. At least that's how it was when I got accepted but things might've changed since last I've heard.