Probably not, but also I think they’ve ironed out the kinks in the 2070 by now - as long as you don’t end up with one that’s been sitting on the shelf forever.
It may be smarter to get one of the slightly newer 2070 "Super"s? or if it’s a specific card / manufacturer that has released their regular 2070 more recently, I think there’s less chance of having a problem. So I guess also if said laptop is very recent you might also be fine too.
There’s really no great answer to this question - the real answer is “don’t rely critically / solely on one computer or component” which I know is not a really helpful answer, but unfortunately it is the unavoidable reality of working with niche / high performance consumer computing.
I have a laptop and a desktop that I can switch between, and an older laptop and older desktop that are “good enough” that I could fall back on if the newer one or both laptop and desktop fail, but yeah like Evan said, you are best served by buying from a reputable source (which may be a little more expensive) since they will have more robust return / warranty abilities, and then assume that worst case scenario, you might be without said card for up to a month if something fails and you need to RMA it.
Sorry there’s not a better answer.