In his career, Sanders has been OK. But he has been bad for a couple of years.
Also, your stat about 50% seems made up.
From 2022:
Players under 50% from 50-59
Austin Seibert (0/1)
Cameron Dicker (0/1)
Mason Crosby (1/4)
Ryan Succop (2/7)
Jason Sanders (2/6)
Harrison Hutker (2/6)
Greg Joseph (3/9)
Players at exactly 50%:
Ryan Bullock
Greg Zuerlein
Players above 50%:
There are 24 of them
Hold on. How much above 50%? If half of those 24 are above 70% then I'm wrong, if the vast majority are between 50% and 70% then I think I nailed it. I was basically shooting in the dark at that 50% number. Hell even Sanders has been above 50% for his career.
Also, when you miss matters. And compounding misses matter. This is two weeks in a row where Sanders can put a game away and doesn't. It starts to affect your coaching decisions if you can't put a guy out there when you need the points.
I'd say it's a combination of when and from what distance. Asking a guy to seal a game from 55 is asking for miracles from heaven. Honestly I thought Miami should have punted there especially getting one blocked earlier. Let's not lose sight of the fact we had a very makeable 3rd down just before that play that Tua fumbled. Good chance of getting a 1st down there if we don't fumble the snap so that Sanders isn't asked to make a 55 yard field goal and we're blaming Sanders for coming up short? I think that's a bit short sighted.
It's not like this happened in a vacuum.
In the last 3 seasons, Sanders is 4 of 13 from 50-59. That's probably the worst in the league, or close to it.
He's also 49-56 from inside 50 which is 88% during that time. That's actually pretty good. You can probably find some kickers for the last 3 years that are better from over 50 and a lot worse from inside 50. His kickoffs are pretty much automatic touchback as well. Pick your poison.
If you want Sanders cut then who do you replace him with?