You're going to lose me at the notion that I'm somehow exercising "white privilege" by consuming/offering alcohol at/around/near work functions or venues.
If the author is already making the reader concede an implicit agreement that there is an "inclusion/diversity" problem, then I'd argue the problem exists at a deeper, more fundamental level.
This reeks of selection bias and circular reasoning when you say that things that occur in a non-diverse environment are immediately perfect examples of non-diversity because "look at this non-diverse group of people partaking in $thing".
I'm even fine with saying it's non-inclusive, except that has to cut across all demographics, including white males. There are plenty of white males employed in tech who find the idea of socializing/drinking with co-workers absolutely contrary to what they feel is fun or engaging.
As a thought experiment: let's say all tech companies, from startup to FAANG, as of today, went completely "dry" for any and all work-hosted functions, as well the same policy for all corporate offices/locations.
Would diversity get any better? And if not, how can you say it was making it worse?