Yeah I get it. But that is an issue with technical management making a long term decision without planning correctly.
Sounds like your managers are either looking at those trendy tech jobs too (and want to have the buzz words on their resumes) or they think the trendy tech will attract candidates.
> they think the trendy tech will attract candidates.
This. Management says semi-openly that the job itself is too boring to atract solid candidates, so they at least need to make the tech stack interesting and good for CV. Working with hot stack is basically part of compensation.