You can run an old version of core with the choice still available to you. All implementations of core are backwards compatable. It seems safer than running something different with all sorts of potentially problematic changes and while declaring it does not matter that the individual advocating this drastic measure no longer has a financial motive for bitcoins success, a big old axe to grind and has opened a communication channel with the feds. But that's just my opinion the choice is yours. Also it raises red flags when people say a project, that is working perfectly fine, is completely doomed unless I alone am allowed to fix it. And when pressed for specific answers I get rambling deflections. In other words knots has been saying Bitcoin is doomed unless we all switch to knots but when pressed for specifics on how Bitcoin will fail the argument falls flat. imho. Footage of knots saving bitcoing