i can imagine how some super senior engineer may like this kind of very challenging experience.
True, perhaps some are into maintaining shitty legacy systems with not enough budget.
A super senior consultant might: they are paid by the hour/day and they are free to fire the client and leave if the working situation becomes too hairy.
As an employee, the best advice is GTFO.
OP is clearly not senior. If they were they would know how to get from A to B.
Do you work at Google? They never repair things. Hence 5 (10?) unfinished chat programs.
A Google employee would have told you that they work for Google.