Atemsiel has stated they arent going to abandon Stormside but the work load was getting too much with there being like 4 version of a single scene based on your chosen route with that specific girl plus all the varying dialogue that comes from those different routes, Studio Hearts is a reprieve from that since its a more linear story and lets Atemsiel take a break from all that work and help their headspace for Stormside otherwise burn out hits and no more Stormside
no one likes to see a good VN die but sometime it happens purely from the workload from making a VN let alone a very ambitious and complicated one like Stormside is on the back end