Seeing a lot of comments like this here. Lightroom v6 still seems to work, in spite of what you reference in your comment. This article isn’t about Adobe failing to maintain software, or that Lightroom v6 needs a rewrite. The software still works if you change the system clock.

The software breaking seems to be a licensing issue. Adobe sold customers this software under a perpetual license when Adobe did not have a perpetual license for the libraries they bundled in the sale.

I’m not sure how Adobe could legally do this.