In the short run if you want to hit some of those creator goals and quick dopamine thrill of a sub, sure.
In the long run when you need consistent engagement to remain visible and need a loyal readerbase, no.
Plus, people do check out someone's subs. Personally, I skip stories where most of the subs are just sub4sub people. It doesn't tell me how genuine that engagement is when it was mostly just a pact made from the Forums.
Your algorithm gets messed up in the end, when your views, likes, and subscribers were inflated for one day from this method, rather than consistently with readers who do like your work.