Depends on what happens when they make errors. Is it comparable to human errors or are they prone to making worse mistakes than humans on average in terms of the conseguences.
They might be 99.99% perfect but in 0.01% of cases cause massive car pileups in motorways (for example) due to reasons.
A proper risk analysis based on a controlled transition would be better to be done first.
You are not going to get a more constructive criticism from OP.
I use mainly ddg but I have occasionally needed to switch to Google, but it’s happening less and less.
But then again with Google you need to frequently add keywords such as discussions or Reddit to find something that in the word’s of OP doesn’t suck balls.