I've looked at those - and the grommets, cheesy though they appear, aren't metal, so they have a larger surface bearing area - which in this case is a good thing.The shade cloth I use.....
https://www.lowes.com/pd/Easy-Gardener-Shade-Fabric-By-the-Foot/3028059
Sold by the foot in 6' width. I have had mine over 7 years now and it's still holding up really well. Grommets are carried in store as well as at least 3 colors of shade cloth.