Do you guys see something wrong in this picture or is it just me?

Not enough data, its not unheard of for people to just do placements, then wait until the end of the season to grind out their old rank. Would need more previous or future data to determine if thats suspicious, not just the data from this season.

Edit: Some people also just don't play ranked as often as they should, the fact it's been in masters for three months kinds of means something. If you don't play in that tier for 10 days then you lose 100 LP a week, so because its staying at about the right level then they probably do deserve it or someone is playing on it for them, either way no way to tell, would be alot more obvious if the master rank tanked all of a sudden.

To boost from mid silver to master would cost thousands of dollars and the dude would have already fallen out of masters. This is a bought account because of the ability to stay in master for 3 months.

Time will eventually tell the truth ... If he got silver//gold's skills then he will feed the hell out in Master tier dropping fast and if he avoid to play ranked the system will eventually kick him back in the ladder.

So if in 50-60 days he will drop too much we will know if he got boosted

I think it's just a Master smurf.

I'm seeing proof that elo hell isn't real :P

What do you guys think?

That it's suspicious. Nothing more nothing less. This picture is simply not enough to form a definitive opinion on whether that account is boosted or bought. Even if I would be surprised if this was an account that was neither of the two, there are a lot more factors to consider. "Suspicious" and "guilty" are not synonyms.

Could be a smurf account.