Liquid has tradeoffs & this is how I see it.

It's not as low risk as Onchain Bitcoin or self custody Lightning.

It has less risk than a single party, custodial lightning wallet.

It's not as fast as lightning (1 min Vs 5-10 secs), but fees are cheap & you don't need to manage channel liquidity.

It also seems relatively easy to move in & out of. Moving in/out onchain Bitcoin has fees & so do the swap services (more like lightning fees though).