Again, he's not getting any money from Patreon right now. His current patrons can still get access to the game links and other exclusive perks, though, which is enough of a reason to keep his account active (the main reason being he still thinks about creating new games so why delete it). Currently, his only income source is the Steam sales of his completed titles.
Patreon kind of forces you to offer something to your patrons, so being retired while still getting their money is a big no-no that will get you deplatformed as soon as someone reports you for being inactive. Patreon is not a shop per se, Steam is.