Yeah there’s a kind of influencer version where you pour sealant into the tyre before you try to seat it rather than seat the tyre, inflate it, deflate it then add sealant throughout valve (with core removed)
I’ve done somewhere in the neighbourhood of a hundred or so tubeless setups using both methods, never had a sealant tsunami. Are folks not whetting the rim so the tyre seats more easily?
Where does the sealant tsunami come from? Is that people trying to seat a tyre with
sealant in it?