Hot take, I see no issue with this. If you're savvy enough to know about Tor and its purpose, you're also savvy enough to know how to add a security exclusion in Defender. People who don't know how to whitelist a program in Defender probably did not install Tor themselves and won't be safe using a program with the capability to access the dark web.

It's extra frustration for those trying to legitimately use Tor, but it's also a safety check in the case of an unintended install.

Digital games are a bit different, since you're actually downloading the game files. Games can always be modded to remove DRM, or the systems they run on can be modded. See the 3DS as a good example of the latter.

The best equivalent is game streaming. You never have the game's data in your possession, and a game can be pulled off the platform at any time. Even then though, you're usually paying for the service, not individual games.