I don’t think the OP is using platform/flat pedals as most people understand them.
MKS Sylvan pedals he linked to are traditional quill pedals. The Next model has a serrated edge cage. There are no pins.
Five tens, skate shoes are great, I use hiking shoes on my mtb platforms with pins. Would never consider using them with clips and straps.
Running traditional clip-strap quill pedals without cleats causes the shoe to be pretty loose. I’m running older DA 7400 pedals that have a bit more contact area, but it is not foolproof against an occasional slip even with my touring shoes.
I’ve ridden a lot of years with traditional cleats and your bike is like Mary’s lamb as it will follow you where ever you go in a crash.
John