Relatively minor for source code forges.
The reasons everyone uses GitHub:
- Free, even for private repos. No ads.
- Free CI - this is huge. Nobody else does this because it costs Microsoft around $100m/year to provide.
- It's quite good.
If anyone can ever compete with that then I doubt network effects will keep people there.
You have misunderstood. The is ranting against Clean Code, not clean code.