Agreed 100%. I have recently been involved with a parish trying to re-introduce the TLM. The pastor is all for it, but has been slow to brush up his own skills and to enlist servers from his own parish, so he has been relying on our team for monthly celebrations. I've had to inform him that we can't keep this up, and have advised that the best thing he can do is make the TLM an every-Sunday feature, and then give it time to put down roots. The liturgy itself will do all the rest.
I was in a similar situation although it was (some) choir members from our TLM who were helping out a pastor at a nearby parish to start a schola to chant Vespers (EF) once a month. The original plan was to have our singers be the "starter" for their schola. Well, several months went by and no singers from their parish ever materialized. We finally told the pastor that we couldn't support his parish indefinitely and eventually stopped going.