Originally Posted by 70sSanO

It is a supply chain issue.

Years ago there were no issues with the supply chain with fewer cogs in the cassette, there was less wear on the supply chain.

As more cogs were added to the rear, this caused supply chains to wear thin, especially during the pandemic.

Unfortunately, in a global economy, supply chains were not maintained adequately and wearing resulted in the availability of parts skipping all over the place.

So now you only get one chainring.

John