Is the Lightning Network overly complex compared to other scaling solutions?

A common criticism of LN is that it's overly complicated. The "Keep it simple" folks often say that's why it hasn't really adopted well.

In the ETH world we have L2s like Polygon, Arbitrum and Optimism. Each are basically their own sovereign chain. (Correct me if I'm wrong)

So when the options are between LN and "entirely new blockchain" is it really that bad?

I personally like LN. It's fast and reliable for small transactions. It's got it's liquidity problems but it was never really meant for moving huge amounts of BTC.

Iv also used Polygon but only for some small things.

Edit: Just for clarity by complex I'm talking about technically. Payment channels and watchtowers is what I recall being brought up often.