Don’t ever give out your templates or show your process. If they can hire someone less experienced at a much cheaper rate, they eventually will.
I think you’re usually legally obligated to. I mean, crappy boss never ask is one thing, but if they inquire how you do your job, which templates you use etc, the employer owns the templates you created during your paid work time on probably the computer which is also the employers property. You don’t have to throw every detail about how you do your job on the table yourself if no-one asks, but if they do you should or they’ld win any legal dispute and you could be fired on bad (financial) terms. Likely whatever you show and explain is still to “complicated” anyhow.
How often do cults end in mass suicide?