That ship sailed several paragraphs ago, when <script> got special treatment by the HTML parser. Too bad we couldn't all agree to parse <![CDATA[...]]> consistently, or, you know, just &-escape the text like we do /everywhere else/ in HTML.
What worries me more (on coding related impact of AI - because of course all the impact on fake news and democracies are much more worrying IMO) is having to deal with code written by others using AI (yes, people can write shity code on their own, but with manageable pace)
Imagine if Oracle was adding a restrictions on what you are allowed to build with Java, that would be a more similar comparison IMO.
SSO also has the benefit that admin can impersonate another account, which is generally a good thing in a corporate environment (think of employee turn over, bus factor, etc)