It won't affect float operators greatly. Flying day VFR with a 7am start, you can still do a 13 hour duty day with unlimited legs. If you want to wake your pilots up for a 5am start, the day is a bit shorter.
What this will end is the expectation that pilots stay around and do manual labour when not flying. Painting the office, fixing the dock, helping maintenance, loading other planes, sweeping the maintenance hangar, etc. That practice tends to lead to working 80 hours a week.
My life is more valuable than any job. If it's unsafe then you always have the option to quit..... I did and it sucked but I don't regret it.
Do you really think this industry is the only one that has such issues? The oil patch laid off/removed over 100,000 jobs in approx. 2 years. I'm sure there are unscrupulous companies there too that push the rules and pressure people because they can easily be replaced. Walking away is always an option.
Often pilots can't afford to quit. The abusive companies typically have nasty bonds as well. They hire kids with a fresh CPL and 200 hours who don't know any better. Now they're 6 months in, exhausted, still 20 grand in student debt with a 15 grand bond. Well, I guess they could quit then declare bankruptcy and go on welfare.