The first wave of layoffs Snap did were related to the hw engineering org. AKA those glasses they mad, right? They were a commercial failure and a distraction so I viewed that as largely a positive sign.
This wave of layoffs seems like they are trimming the fat in sales/marketing, again not necessarily a bad thing. Other companies like twitter have done this and gone on to recover.
I think the biggest problem with Snap right now is how similar it is to Instagram now that Instagram has cloned stories. Twitter served a far different use case from Facebook and they seem pretty safe now that FB is backing away from news.