First screen, captured 11 days ago. Open the video.

Can’t fish Ethernet? Use “invisible” fiber instead

What HN thinks

A thread of network engineers gently suggesting the author just re-crimp it, while the fiber crowd quietly glues glass to the baseboards.

Bad terminations, not bad cable
Many argue a Cat5/6 link stuck at 100 Mbps is almost always a bad crimp or punchdown, so re-terminating should come first; several warn electricians often botch low-voltage work.
Fiber is the better home LAN
Thin, pre-terminated fiber with bidirectional transceivers is cheap, nearly invisible along baseboards, and scales easily to 10G and beyond.
Copper alternatives still have a place
Some defend MoCA over existing coax or 10GBASE-T over existing twisted pair, while others say powerline and MoCA are slow or flaky and 10GBASE-T runs hot.

Consensus: Most agree you should test and re-crimp existing copper first, and that thin fiber is an excellent non-destructive option when that fails.

Recommended in the comments

MoCA (other): A non-destructive option if the home already has coax, with a filter at the entry point.
iperf3 (tool): Suggested to measure the actual local link speed instead of relying on ISP speed tests.
10GBASE-BR bidirectional SFP+ transceivers ↗ (product): They let you run one fiber per endpoint, and the LC versions are smaller and more common.