Slow bidirectional routing speed on Raspberry Pi 4

Should the pinned post So you have 500Mbps-1Gbps fiber and need a router READ THIS FIRST in this category, which says

maybe be unpinned or updated based on

Since it was pinned and addressed my exact question, it was an important factor for me to decide on a solution. I saw that it was from 2021 but assumed since it is still pinned, it is still relevant today.