Seems like selection bias to me. You can also Google "does global warming cause warmer winters" and get:
"How Warming Winters Are Affecting Everything": https://www.npr.org/2020/02/18/803125282/how-warming-winters...
"5 reasons why your warmer winter is so alarming": https://www.edf.org/blog/2020/02/12/5-reasons-why-your-warme...
"Winters are warming faster than summers. These US cities could lose weeks of freezing days by 2050." https://www.vox.com/science-and-health/2018/12/20/18136006/c...