Drawbacks of Sharding

Hi Eth crew,

Just worked my way through Vitalik's posts on Sharding, I think I understand the base concept behind sharding, and the Ethereum proposed implementation to solve for availability and the fisherman's dilemma.

What I'm still keen to understand, is the weaknesses of sharding from the perspective of someone who is not a proponent. Vitalik has outlined what he sees as answers to a number of criticisms of the approach, but I would like to explore what other arguments people are making against sharding.

In particular, Vitalik makes some good arguments against high TPS chains, particularly in regards to forking and trustlessness, so I'd be interested to hear why such chains opted away from a sharding-type solution.

As an example, I've seen some high level articles quoting the Solana CEO, and his opposition to sharding, but I'd be interested in a particular article or podcast where they go deep into the subject.