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Dell RTO mandate said to be a stealth layoff, for women
(www.theregister.com)
This is a most excellent place for technology news and articles.
No. This is not legally correct in the US. Discrimination can be direct (women have to RTO, but men don't) or indirect (everyone has to RTO, but women are statistically way more likely to be forced to quit their jobs due to the change). This is called disparate impact and is a serious issue.
Now, is this happening in this case? Possibly. Likely too early to tell.