There's not much more a coach could do to tarnish their reputation than reside on a modern UL "Big Two" sport staff (there are teams like Auburn, UNC, and FSU that contest that). This is looking at the situation objectively.
Louisville programs have: extortion, abortion, adultery, human trafficking, paying recruits, drug charges, misuse of funds, and media appropriation. The last two in that list are less objective, but a case could nonetheless be argued and backed up with evidence.
That's just my two cents on it. I personally hold no hatred towards UL athletics, but the modern department ever since UL moved from AAC to ACC has progressively made a reputation as a win-at-all-costs program.
Now, is everyone who goes through UL a bad guy? No. However, the overall department starting with Jurich and trickling down to GA's and even in some cases, players, has become tainted from an objective standpoint and this begins to infect the subjective reputations of people who work within the athletics department. Whether justly or unjustly, this happens.
Like someone who is tried for association with a major felony but is not guilty: there may not be prison time, but you can expect a potential employer to ask about it.
I'm not saying Lamar is a perfectly clean individual aside from any unsubstantiated subjectivity from coaching on Louisville's staff. What I am saying, however, is if we only employed completely clean coaches, we'd run out and have to hire middle schoolers.
Again, that's me trying to look at it objectively.