Are alot of people still playing ME3MP?

There are a fair number of regulars, depending on your time zone. A few weeks ago when I was in last, I had better luck finding Gold than Silver. I didn't try Bronze at all. It's not instant anymore, like it was Back In The Day, but you'll still find a lobby. I've always tended to PUG into others rather than start my own.

On PC, I regularly find GIP or lobbies very easily, actually any time of the day (my schedules vary a lot). No problems finding gold or silver matches, and even a platinum lobby seems to fill up soon, if have a slot for one or two players. I've occasionally had to search for more than 30 seconds around the European noon hours, but usually not longer than that - and even those are rare.

Many of us regulars out there daily, and I still keep seeing new accounts popping up every week - or older looking accounts who just came back to the game.
ME3MP will keep on going, simply due to its superior nature.

Yes, there's still a lot of scrubbery going on

The game is dead. People have moved on to Andromeda, from what I've heard.

Same here. I'm assuming that was the intention, and was reminded of the "this place is dead anyway" scene in Swingers. 

I accidentally went to the Andromeda MP section the other day - I think there are a total of 5 unpinned threads which have been active in 2020. I know it's pretty dead here, but we've had 25 active unpinned threads this month alone. Some of them have even been on-topic! 

logging in is for scrubs. I can now play the entire game in my head, from loadout to getting the 15 revives medal by wave 6 and disconnected by Origin in wave 11.

For this reason they should have added bigger grab medal requirements

Last time I played ME3MP, it felt as if I was the last person still playing. Mostly I played solo, with the rare player joining. Other die hards played solo too. So I would join them. Every now and then I wonder if the player base is healthier than when last I saw it. Only one way to find out.

I miss all my BSN friends. I haven't had any platform to play on in nearly two years due to certain hardships in my life, but I've started to build a PC a few weeks ago and all I need is a monitor and a GPU and I'll be set. I can't wait to get back into ME3 MP, especially with the remaster coming out soon! I am so hyped! I hope most of my friends still play!

Unfortunately, my config does not have an integrated GPU (Ryzen 3600 / Asus x570 MB).
It's okay, my estimations say, I'll be able to order it the first or second week of July. It's going to be an awesome summer!