Yeah, that's why I'm not super-fond of the all-digital and all multiplayer future. If you get banned from the MP - yeah, that could be your entire game you get banned from and/or your entire account w/ a game-service that you can get banned from.
If I've paid for a game - yep, even if there is a MP mode here and one gets banned from it, I do feel I should be able to play it SP-style offline and against bots. This goes for skirmish/competitive modes - we can still play games like Quake 3 and UT offline against bots, can't we? I shouldn't be beholden to be on the Internet and a company's game-servers, just to play a game that actually already has built-in bots/AI that are purposely there so I can basically play solo. I really shouldn't be tethered to the Net, if I can solo the damn main campaign and/or main modes.
Same goes for online-only games like Destiny 2, which I mostly solo'd for a good majority of its main stuff. Games like TDU2 - yep, those can be played offline; and it's just when you're on the map, you can't do the MP-required stuff if you're offline; I still have access to the SP-based stuff.
What's to happen years from now, when nobody's playing these games online? Are they just going to become coasters? It's sad to see MMO's, MP-only, and whatnot become a thing of the past and the plug get pulled for good b/c...well, nobody's playing it online anymore. Games (especially great ones) should be preserved, so that when a game's servers are dead w/ no players - there's still ways for those who spent the $ to play the game solo and offline; and/or allow for LAN support so gamers can find each other and play those via whatever means (peer-to-peer, a gamer has their own dedicated server of their own, or whatever).
That's why if they do have bots/AI built-in and do build the game's campaign to be played solo - yep, I do feel they should make these games work offline.