I like this take. Copilot to me seems a glorified (very intelligent) auto-search-paste/autocomplete service. It is just mimicing what usual devs do which is to copy-paste code from StackOverflow/github for many mundane types of codes like for loops, mongo find queries, callback func definitions etc for JS devs for eg.
The idea of auto-attribution if copilot surfaces licensed code is best because then it keeps the copilot user honest where the code is coming from and honor the original license.