Currently deploying. Unofficial head platypus of /lp 

super easy to deploy
every library supports it
well funded team that continues developing it

customer support @supercast

trying to sound smart /doingnumbers

Any notable pain points? My biggest concern is the vercel lock in.

There are a few pain points like:

1 Doesn't have a SPA only mode
2 Vercel lock-in 
3 Pretty heavy in terms of dev resources
4 Not the most performant stack out there

Probably for more users benefits are more important:

1 Huge community
2 Probably most jobs because of React
3 Relatively simple to use
5 Great if you're a React lover ( this can be a drawback too if you hate React)
6 Huge amount of libraries and UI components out there
7 Good support for running code on the server 
8 Can be used as a full stack tech
9 Can share logic with Expo if you're in the RN camp
10 Comes with a bundler that has almost no need to be configured
11 Pretty mature and well funded