Is there a reason to go more BI developper instead of staying in FP&A (FP&A seems way easier, less study for nearly the same pay?)

I am currently an FP&A, making 70k CAD, I mostly do monthly and quaterly analysis using pivot table in Excel.

I do like to build data model in power pivot and use some basic dax here and there (I like power query too to merge our different budget file into a consolidate)

I mostly learned with googling when required based on the project at hand.

I've never read a book or followed a "class" for those.

Now I do enjoy building report more then I enjoy doing the anlysis, and my company signaled their intention to buy an SAP/Reporting software, instead of us using data model. SO I am scared the reports will now be generated automatically via this new system instead of me modeling my own data and creating my own reports.

Now, should I leave now and try to go more into BI developer corporate role?

I am hesitant because it seems BI developper = a lot more studies and reading book and maybe even personnal project on the side to keep up with new technology and getting up to speed.

While the pay seems to be quite the same? Isn't a Bi Analyst/developer just a FP&A on steroid? why aren't they getting more compared to FP&A?

So basically, stay in a cushy FP&A role but where I won't have the chance to practice BI anymore

VS

Switch to BI, because I enjoyed using some DAX and Data modeling?