Earlier quoted context omitted.
So it doesn't give you the idea that China is clamping down on software developers. Unless there is an on-going trend, this is an independent move by some administration out there.
Hu Xijin, the former editor-in-chief of CCP’s mouthpiece Global Times, wrote a Weibo post questioning the confiscation. His Weibo post was later deleted. [0] Whether the post was deleted by himself or by a censor, the central government is complicit in banning VPN and this is more than an independent move by a local government (unless you think the local government has substantial influence on Hu Xijin or the censor)…
One comment in the first article you linked said 99% of software engineers in china use github.
The CCP is 100% aware that people use vpn to access foreign websites.