The snap election has nothing to do with the Brexit. Thats just the trick London is using right now.
The snap election is designed to prohibit a possible scottisch refferendum. If the tories can collect enough voices from scottland they can use this voice count as justification and the legitimation to not allow scottland to have a seccond referendum. even thou the second referendum passed the scottisch parliament- for it to happen london still has to agree to it.
A tory vote in scottland would give May the power to simply say no and put as reason “yes the SNP may be the leading party in scottland, but look the scotts have voted for the tories and they obviously agree to our politics and our brexit politics, so we do not see it necesarry to have a second referendum about scottland leaving the UK”.
Political games instead of solving problems. Thats what UK is doing since 2 decades. Thats whats leading into new problems over and over again. the fight for power is more important the the fight for a better future. That is the root of problems like brexit or scottisch independence referendum etc.