Is l mount a good system to buy into?

Here is what the site says about that.

From OM System OM-1: OM System OM-1: A mirrorless camera by OM System with a 20.4-megapixel Micro Four Thirds sensor, announced in 2022. The first OM System flagship: a stacked sensor in a weather-sealed body.

From OM System OM-3: OM System OM-3: A mirrorless camera by OM System with a 20.4-megapixel Micro Four Thirds sensor, announced in 2025.

Quoted from this site's pages.