I'm going to base my answer about twelver shia who make up the majority shia.
I consider their laymen Muslim. However I don't trust religious twelver shia. I've noticed that they consistently preach unity but the first chance they get to get an upper hand on sunnis, they will take it. And it doesn't seem to matter to them who they ally with to get this upper hand. Qadianis, extremely anti-Islam people, murtads, I have seen the member whoaretheshia here team up with all of them against sunnis. This seems to mirror real life too where Khamenei teamed up America to invade sunni ruled nations like Afghanistans and Iraq. Quite frankly religious twelver shia have the worst human attributes I have seen - backstabbing, deceit (mainly due to taqqiyah being encouraged), supporting murderers openly, helping enemies against non-twelver shia groups etc...
I know two properly in real life. One is outwardly religious. I got a long with him fairly well. Haven't seen them in a couple of years though. The religious one would do things like avoid praying jummah with us etc... And that's fine. But I imagine he did hold anti-sahaba views deep down as religious pakistani shias tend to aware of their religion. The other is very clever, I'm sure he has read up on his religion but his level of practicing is iffy. He never chats unity or politics and rarely does he talk about religion. Not sure where exactly he lies tbh. Maybe if I see them again then it might be worth having a chat about these issues.
I have gotten a long with irreligious twelver shia though and they even hated on ayotollahs with me. So that group I show more friendliness to. Though I have to admit my friendliness with them is a result of their ignorance of their own beliefs. But if they are ignorant of real shia beliefs and do not follow them then it's good.