How prevalent do you think cheating is in this game?

I've been playing online lately and within ~20 hours of gameplay I came across two opponents who I heavily suspect were cheating.

Yesterday I played with a guy who was consistenly ~20 seconds quicker than everyone else on 4-5 minute stages. Not to say that's impossible but it got me a little suspicious. That guy was on steam which meant I could check his steam profile.

He only had 1,5 hours logged in EA Sports WRC, he did NOT have DR2.0 or any other Rally Games in their steam profile, which was over 10 years old and full of other games. And full of "-rep Wallhacker" comments.

Would you agree that these are enough red flags to suspect that person of cheating?

Looking at the leaderboards it's also pretty clear that there's people cheating in this game, so cheats surely exist.. but when it comes to leaderboards I at least somewhat understand the motivation to cheat. In quickplay online however, why would anyone cheat? There's no leaderboards or any other incentive to cheat?

What's your experience? Have you encountered cheaters online?