You're right, linuxer. That's pretty extreme. It probably reduces the life of the carto a bit as well.
But whatever helps you sleep better at night....
To the OP, the condom method is the absolute best filling method, IMO.
If you're burning them out, it's probably not because you didn't let them sit long enough.
It's probably because they were insufficiently filled in the first place.
When I fill, using the condom method, I never need to let them sit for more than a minute or two, even with 80-100% VG juice and even though I fill them from the "mouth" side. Usually, it takes 1-1/2 "condoms" filled 3/4 of the way each, to get a complete fill
The Taryn spin isn't even necessary, although the "thermometer shake" helps a little.
I save the Taryn spin for those rare times I want to rescue juice from a just filled carto that suddenly burned out.