Gemini:// is a protocol that currently feels a lot like the geocities-era web. It is not yet September there. You’ll find how to get in if you try hard enough.
Gemini threw the baby out with the bath water by disallowing in-line images and styles. It's not like GeoCities because there's very little if any ability to express yourself artistically with the medium. Half of the "Geocities" pages people harken back to were themselves artistic content.
In-line images are up to the user agent. A Gemini client can permit the user to turn these on. Besides, Gemini being a protocol that aims to be hostile to tracking, made it a bit harder to include tracking beacons/pixels by not allowing those to be downloaded by default.
