No, don't be a jerk. They asked for Monday and they should get Monday.
I for one greatly appreciate the lack of spoilers on Twitter to date. I had no idea what to expect last night when I saw it for the first time.
In general a decent person should respect reasonable embargos.
I wish twitter had the ability to add spoilers behind a guard like Mastadon does. It makes a lot of sense that people want to talk about it BUT as someone who has been a little busy lately, I would prefer to avoid spoilers 😀