As organizational complexity increases, design debt and responsibility becomes diffused among larger and larger groups of people. Leading to the bizarre situation where no individual has power or responsibility over anything specifically.
Any individual interface element might have taken input from as many as 100+ different people over many years, each with competing interests and goals (no, I'm not joking). Combine this with the precedents and decisions made on projects in the past (design debt), and you end up with stupid outcomes like this.
As a multiple FAANG alumni, I've seen this firsthand hundreds of times.
I think it's cute that people think IC designers or engineers have the power to make any real decisions inside large organizations.
What's more likely, is these stupid icons were part of some design system somebody created 7 years ago (have to stay consistent of course!). The circular floating buttons were a precedent somebody set 5 years ago on a completely different product (god forbid it feels "off-brand"). The colors were set 6 years ago on some project where this kind of application was never thought of.
And finally, the order & placement of the icons was changed 15 times by some PM, then the PM's boss, then the accessibility guys, then the brand team, the brand team's boss, then the director of marketing, etc. etc. The tie breaking vote going to whoever is perceived as having more soft power inside the org at the time.
Hence, the inevitable outcome of big company stupidity.