This.
If you're not FAANG, FTSE 100 or an engineer in the finance sector, your pay is similar to an entry level office IT worker.
If you're not FAANG, FTSE 100 or an engineer in the finance sector, your pay is similar to an entry level office IT worker.
Outside of London, your statement is much closer to the truth. Lots of employers in Manchester for example are there principally to avoid paying London salaries.
Honestly though, the day to day reality of programming in fintech is about the same as working in any other industry.