I do not know, maybe he intended to add ~kro55 but forgot the tilde?
I did not check for the potential second change of ownership in June 2021 but there is definitely something suspicious here because the 2015 to 2017 gap still seems to be the original owner. The next gap between 2017 to 2019 and the immediate post of staking the address, that post does not seem to be made by the original owner.
One of the things I remember about the borovichok account had in his favour as a defence was the staking of a new address from by signing an old address somehow proved he was the original owner. Eventually he abandoned that account after multiple tags (and no doubt uses others here) but the point I think is that is how some sales take place therefore if the seller staked an address in the past they have to sign a message or give the private key as part of the deal for the new owner.
In this case, I do not think the original owner staked an address therefore if the account was not sold it could possibly have been hacked but either way it does not seem to be operated by the original owner.
kro55
First off, I don't understand why Igebotz would add this user to their trust list as they haven't left any feedback.
Original owner's last post was in Dec 2017; prior to that it was Aug 2015.
The first thing the second owner did - in Sep 2019 - was stake a Bitcoin address which was never used on the forum before or after.
The account seems to have changed hands again in Jun 2021, as there was a 1+ year posting gap since May 2020. BPIP data corroborates these potential changes in ownership:
They also received a merit from this user which I want to remember to take a look at later. (2nd edit: seems to belong to the original account creator)