If you are on the other team, this is also a good list if you want to avoid bad neighbors.
Hosts that don't ban tor nodes probably don't have a great reputation.
I think the hosts that Tor recommends against because there are already so many nodes hosted on them like OVH and Hetzner are perfectly happy with their (quite good) reputations.
I've run a personal mailserver from one of the "Don't use these ASN/Companies because there are already too many tor nodes" VPS hosts for 14 years (and going). They've had excellent service, I never had a problem with my neighbors on the shared hardware, and my mail deliverability rate has been on par with other services. Just one data point for you.
Not to mention, why on earth would I ever operate a TOR relay or exit node on my home internet connection? Maybe if I could guarantee that it could only be used by journalists or political dissidents, but everything else? No.
I don't need the authorities at my door every few weeks wondering why some of the most deplorable internet traffic of all time is coming from my house.