Pros
If you're someone looking for extra income while having control of your time, the design creator program is good.
Cons
You only get paid per PRO template. So even if you created hundreds of stickers and text templates, but they were not tagged as "Pro" (something that users will pay for in the app), you will not get compensated. Plus they are always experimenting with the pay out scheme, so it is not a stable income stream.