This data is only seen by you. It is not sent to anyone.
"Maybe incorrect"→It tries to get the browser name and OS from the following string
If you're concerned about privacy and/or what that string means and/or how it affects you,
give this(TODO) a read.
I don't care about logs (I can't check them anyway), and I don't run any analytics things on my website (not even for the error pages). I don't even need your browser info in the first place and I don't share it with anyone
If you don't wanna take my word for it, then use some 'User Agent' spoofer to hide or change it