This question already has an answer here:
Today I noticed this user is suspended network-wide according to the text on the profile page:
No other SE sites are visible in this profile page, only MSE.
Just out of curiosity I went to the Wayback Machine and found the user's old profile. That snapshot of the profile page already contains two sites in the community list (MSE and SO), hence visiting the current version of SO profile I expected to see the profile page of suspended network-wide user. But the user is not suspended. How is this possible?