it's possible to be booted more times then amount of boots, bc you can come back from AI and get booted again.
That is true, but also if he/she/ot had more boots than total games his/her bootrate would be above 100%. This just signs he/she/it has a large chunk of practice games and, all in all, got booted in 80% of all his/her games.
Also he/she/it is clearly a diplomacy player so AI boots are uncommon and AI returns even more.