1099-R vs. W-2

Soooo.  My father retired in 2002.  His pension income comes from 2 different plans (from the same employer, but it's managed by different companies) and they are reported on 2 separate 1099-R forms each year.  Each 1099-R is for different gross amounts, but those amounts remain the same (did that make sense?)  So for 20 years we get the same two 1099-R forms that have the same info every year.  Not a deviation ever. 

 

So THIS year (tax year 2021) one of the 1099-Rs has switched to a W-2!  The numbers are the same, but are now reported as wages I guess.  I was wondering if anyone knows how the switch benefits the company?  What do they GAIN by making this switch?  Will my father be at any sort of disadvantage tax-wise because of the switch?  In other words, is this change to his detriment as a tax payer?  Or it doesn't matter at all tax wise?