Personally I am not a fan of SAFe. If you see their process map it’s complete madness and an agile antithesis.
I think it resonates well with enterprises because every existing management layer or project manager may stay. They just get a new agile name.
For example, I used work for a large enterprise that was struggling to adopt agile and get management buy in. However when somebody pitched SAFe it went fast. Management was onboard, people were trained, and yes more importantly certified.
Indeed some teams became more productive, and could coordinate better with other teams. Management had some clue how this new way of working worked. Criticism I heard was that planning days were long and draining.. Either way one could say it was a success.
I would say give it a chance, it won’t hurt because people and teams will just be rebranded. Nothing bad will happen, nor anything super fantastic.