This snap point problem has been present since always. And it is more a PITA than a helpful feature, countless of threads already about it and no real solution or workaround to completely turn them off completely or remove them entirely. Or if you have one, I and the OP are glad to hear it.
Just a few of them:
Create a keycommand/function to reset snap points - Cubase - Steinberg Forums
Automatically move all snap points to beginning of events? - Cubase - Steinberg Forums
Snap Point not aligned to the start of Recorded Audio Events - Cubase - Steinberg Forums
Shortcut to remove “event snap points” - Cubase - Steinberg Forums
Snap Points. HELP US TO ERADICATE! - Cubase - Steinberg Forums
Snap points - Cubase - Steinberg Forums
How to deal with snap points - Cubase - Steinberg Forums
FEATURE REQUEST - move snap point to event start - Cubase - Steinberg Forums
Snap Points - what’s a quick way to set several at once? - Cubase - Steinberg Forums