You can map something like cmd+shift+f to open the entire buffer in your default text editor, this has been sufficient for a lot of folks - myself included - while we wait for native scrollback search to land.
Worth pointing out that this was written by the "Microsoft Partner Product Architect on Edge", a product which Microsoft speed-ran its enshittification.
If you like this post, I would recommend “BPF Performance Tools” and “Systems Performance: Enterprise and the Cloud” by Brenden Gregg.
I have pulled out a few miracles using these tools (identifying kernel bottlenecks or profiling programs using ebpf) and it has been well worth the investment to read through the books.