So many issues conflated on this Flores lawsuit.
Your personal assessment of his coaching ability: irrelevant. He is clearly a qualified head coaching candidate, at the least. Whether you think he's a 3/10 or an 8/10 isn't the point.
Does the Rooney Rule allow for "token" interviews to happen? Of course. That doesn't mean you can break the rule, or that it's not discriminatory to do so because "you're not a racist" or you genuinely prefer the qualifications of another candidate.
Consider the context. There is a pretty wide consensus that NFL hiring practices aren't exactly fair. There's no way that a sport can be around for this many decades, where minority participation is overwhelmingly large, but all the highest positions fail to reflect it. The reasons may be many - societal, ownership, fan base, generational networks, etc, etc. It's not a blame game, but it IS a clear and obvious problem.
The NFL wasn't going to enact affirmative action. For better or for worse, The Rooney Rule was adopted with a simple goal: make sure minorities are at least IN THE ROOM. Because it can't hurt to have more Brian Flores getting interviews, and people on the other side going "wow, this guy really is smart" with an open mind. Anti-discrimination doesn't work by everyone self-certifying "I'm not a racist", and then hiring another white guy without going through the whole process.
The Giants messed up. They discriminated against Flores, even if he wouldn't have gotten the job. They knowingly mocked the rules. This is a big deal. Not because it means person X is a "racist", or Flores is or isn't qualified. The problem is that an NFL team in 2022 doesn't think it has to abide by the most basic anti-discriminatory rules (at best). If they can't handle something so simple professionally, how can they be trusted? Goodell and the owners are a boys club of crooked billionaires with an anti-trust exemption from the government and piles of cash. No sympathy from me.