Can someone enlighten me if Galaxy users are able to access live events? Or are we second class citizens again?

I understand your feeling, but IMHO two weeks isn't long to wait for a DRM-free version. It gives day one DRM sales on the big sites, allows the initial sales to cool down, and then it shows up here. I could only hope all publishers brought games to GOG after 2 weeks.

As it is I continually go begging on Steam forums and Reddit pages for games to release on GOG.. and devs and publishers (even indies) almost never even reply. *sigh* After 2 weeks?

I can wait weeks/months/years for a game, but the developers and publishers should communicate with people.

The thing that annoys me to no end is that there was no warning a là 'hey, the game won't release here day 1, because of *insert some kind of lie*'. They simply cancelled the option to pre-order the game a few days before release.
There was nothing but radio silence, the only response people got was on their Discord channel. Yes, people that already pre-ordered Weird West got a mail from gog, the rest was left in the dark.

It's not as bad as what the Phoenix Point devs pulled, but still a deal breaker for me.
Same here, I keep messaging developers on their Discord channels.
What bothers me more though, is having to beg for updates.

Can confirm that the live events are available on galaxy as long as you accept the community events option in the menu

Currently there is a zombie invasion event

Are those live events multiplayer content of the game?

Not really, its more a small gameplay enhancement, that the devs push as a way to spice things up in the game, in this case for a couple of weeks the "zombie" event will add a chance you might see some settlements/areas being attacked by zombies.

There is a roadmap available, they got more content (both permanent and timed) planned for the future.

Other games that do this timed special event thing (usually during haloween/xmas) are Atom RPG and Gamedec.

Glad to see this one finally here. I was pleased with what I've seen in the reviews from ACG and Mortismal Gaming.

What lore, are the creatures (sci-fi) aliens or of heaven-and-hell origin?

Glad it's on here, although I'll wait for a sale.