Perhaps the best advice that I got regarding spine surgery was from a friend of mine. This was many years prior to me even seeing a surgeon. She told me that any spine surgery was elective (excluding traumatic injury). You live with the spine and pain that you have until one day you may elect to consider and have surgery.
I saw a total of 3 different ortho surgeons over about 10 years before I chose to take the plunge with the last one I saw. Spine surgery was all he did. He was no youngster paying off student loans. Yes, there are new procedures and options every day but at some point, waiting for the next best thing may no longer be what you wish because your pain and mobility issues are impacting your quality of life. Every single person is different and only you know what to do.
Talk to as many different people as you can. Find a surgeon, whether it be neuro or ortho, that you feel comfortable with and that you trust. Discuss potential side effects and decide if you can live with them if they happen to you. Only you know when the risk vs reward balance changed such that you are willing to take the risk.
Any good surgeon will support you getting a second and maybe even a third opinion (I ended up having my ‘second opinion’ surgeon do my work because I felt they were more competent than either of the two first surgeons I talked to.) Ask them about new treatment options. If you find something in your own personal research, ask them about it. Ask them how much experience they have with any new option. Also remember that newer options may have less long term outcome information just because they are newer.
FWIW, even if I’d read what I quoted here, I personally would have still done my fusion. True that maybe some day there would be a treatment option that would have meant a fusion wasn’t necessary but was I willing to wait in increasingly more pain over time for that magic to happen? For me, no, I wasn’t.
The part that is true is it is tough to know what to do. Both for the surgeons you’re seeing and for you.