Thank you for your thoughts.
You are right, I looked into using wiki links vs markdown links and found that the devs are looking to make an export plug in that will convert wiki links to MD, which is really nice.
Besides, their focus on longevity and future proofed software is reassuring. So even if, one day, obsidian is not developed anymore, our notes wont be left high and dry.
Considering that we see more and more apps using commonmark formats these days, I am hopeful.
I am at 638 notes as of now as well and have developed a system of my own that will let me make sense of my notes even if I had only a basic MD editor.
Either way, I am convinced that a bunch of MD files in local folders, synced to cloud and accessed via softwares like obsidian is the best system we could hope for.