as someone else mentioned in this thread, this has been policy for several years already for 200K and up. major competitors have similar policies.
(promotions are different. This is about merit. there will still be bumps with promotion, as long as you are not already over midpoint in the new job grade. This is not new either)
The rationale for 200K+ has been that your financial fate should rise or fall with the company's results - higher proportion of comp is in restricted stock etc. And it's consistent with how bonuses were handled last year. the higher your base salary the lower the percentage of salary for the target IC was. And also de facto the folks in the 150-200 base pay were getting very small or no raises.
Lowering that threshold to 150 will probably make WF stick out as an outlier though.
Strap on your helmets folks. this ride has just begun. Talk to anyone who worked for Chase when they merged with bank one and the Jamie-Charlie train left that station. Many more moves to come.