With the posts makes me think I have not any experience. I tried the grinding as Iam curious and trying ng to prevent egg sticking
Seasoning is the key, thin, very thin layer of pork lard on the inside (very, very lightly applied), in the oven for 3-5 hours at 200-250 face down with some parchment paper underneath for any potential drips works fairly well (and you can repeat this few times before you ever start cooking if you're OCD... repeating won't hurt it - but washing after use with the soap or detergent will).
I can't guarantee anything of course, but our (also glass top) stove is now 12 years old, and I can't say that cast iron is particularly damaging to it. I won't claim it's as good as new, but I don't think there's any more "wear and tear" than you would get anyway - regardless of pots and pans used.
Preheat the pan for ten minutes to start with (you can lower the time with some experience). Always add butter. The preheating will matter more, but eggs like a little oil/butter. Fried eggs won't need any, but scrambled is usually a pain because you want the pan temp a bit lower. Plus, butter on eggs is delicious.
I'm surprised 200-250 is hot enough to polymerize the oil?
I also cook on a glass top and have not noticed any wear either.
Look up kent rollins on youtube. He has done several reviews on the now several new cadt iron companies, and uses both lodge and griswold in all the comparisons. Oh yes, lodge has a new line but only available on their website, when you find it.Le Creuset makes nice cast iron pans with enamel coatings and some without.
No experience with them but I followed a company on FB a while back called Smithey Ironware that I believe offers a smooth interior finish. Maybe check them out
I visited the Smithey facility just this summer and my mother-in-law bought one of their pans. They are indeed machined - partly. They machine just the interior of the pan. They were very smooth. Then they season them.
They also have a hand-forged line that is more expensive. However, these are thinner and lighter. Those have a longer rougher looking hand-forged handle look.
ironware Archives | Smithey Ironware
Best of show still goes to my Grandmother's 10" Griswold. Well over 100 years old.