I would like to echo this sentiment, and also suggest that if the whole co-op aspect of the game is vital, instead of making that the excuse to stonewall people who want to play it solo, release the server files instead. Hear me out, this is a business proposition to EA.
Remove all MTX by making them free via drops (Like Wayfinder). This will prevent servers from being monetized. If a player has the technical capability of hosting the server, they should be allowed to. Many successful multiplayer games allow their players to host their own servers on their own baremetal machines by providing the files. Ark, Palworld to name a few.
I only bring this up because publishers often times use the excuse of "It will be too hard to code out the multiplayer aspect of the game" as an excuse to ignore the customers they're, let's call a spade a spade here, ripping off by shutting the game down. It's not, however, hard to release server binaries as a bundle to people who purchase the game.
THIS will allow EA to still rationally be able to justify selling Anthem, while not spending the money to maintain the servers. Have the server files be an optional DLC. You go into your game, select the server files DLC when you download it, you get the files, and EA provides them on an AS IS basis with NO guarantee of support. Only a guide on how to get them running. Nothing more.
Minimal effort on EAs part, continued potential revenue (However small), the game lives on. The customer is happy, The developers are happy. EA is happy. Everyone is happy.
[EDIT] I've created a change.org petition. Check it out! https://www.change.org/save-anthem