I’d say certainly!
First, Monome is a company that makes a variety of products, including the grid (which I’m assuming is what you’re talking about), the arc, the teletype, ansible, and a variety of other things.
As far as long term support of software, I’d say it’s mixed. Some things still work, some have been updated to new platforms (like taking a max device and making a max for live version), and some things may not work. Some things work in some places and don’t work in others and there’s no clear reason why.
A lot of focus has moved to the monome eurorack modules. They are very cool, and I don’t know of any that don’t incorporate the grid.
A small company/community like Monome can only support so much, so support comes and goes. For me personally, I found that the grid clicked when I was willing to get in and do some programming myself. It’s fun, and you can create software that does exactly what you want.