> This seems unreasonable - all of these things were substantially worse before technology got involved.
I'd agree -- the OP ledger, despite seeming well-intentioned, seems completely imbued with the current on-campus value system, wherein something isn't defined as really bad unless it harms BIPOC and LBGTQIA people more than it harms others.
If we define the arrival of the internet as roughly the early/mid 1990's, America as a country has gotten extraordinarily less racist and homophobic since then. For example, 33% of white people in the South approved of interracial marriage in 1991; today that figure stands at 93%[0]. Similarly, gay marriage was completely eschewed by political leaders, including Democrats, until the early 2010s (e.g., Obama was firmly against gay marriage, at least on paper, when he first ran for President).
None of the above is to say that we now live in a colorblind or non-homophobic society, I just find it odd that they're claiming that tech is making people more bigoted, when the opposite has happened since the Internet has been a thing -- but this is somewhat understandable given that their target audience has been conditioned to see stamping out bigotry as humanity's highest calling.
[0]: https://www.forbes.com/sites/tommybeer/2021/09/10/record-hig...