This is vague. Ill repute in the legal community, general public, among articling students, or among judges?
Here is my 2 cents. This might be controversial.
As a family lawyer, a firm's reputation matters. I think I can boldly state that as a lawyer, reputation is all you have and all you will ever have. This is even more so when a firm serves a small city/rural community where words get around quickly. I learned this early on when I received files where the clients fired their previous lawyer. Time and time again, these clients had the same story of why they fired the previous firm.
Have you seen firm reviews where past clients post LAWPRO/ONCA/ONSC decisions and/or news articles regarding the firm's past practices? Do you want your name on it?
Clients who have been rightly wronged with respect to billing/communication and other LAWPRO-able claims will see every lawyer in that firm the same way. They will see you as being complicit with whatever unethical practice which alleged took place. After all, your salary/bonus comes from the management who condones or encourages certain less-than-ethical practices.
When I was fresh out of law school, I resigned from my first job after a year on the basis of unethical legal practices and discriminatory treatment. It was the best decision I made in my early legal career!
Another aspect you might want to consider is that the legal community is fairly small. I don't know if your next employer would factor in that you were once at THAT PARTICULAR firm as a detracting factor in your application.
Over time, I have a personal list of firms that I would never apply to no matter how high the compensation.
Here are some red flags when you look for a law job:
a) A firm that is always hiring staff (revolving door of employees, firm can't retain talent)
b) Court cost decisions where judges have criticized unreasonably high cost submissions
c) Firm lawyers who have been before the law society tribunal
d) Negative news articles about firm's legal practices
e) Obviously curated/fabricated lawyer review pages
f) Employers suing employees (vice versa)
g) Court decisions where judges blast lawyers for tardiness, incompetence, unethical conduct, unprofessional
If I were you, I would wait for the next opportunity. Take unemployment as your time off.