If more start to do it, it becomes an arms race. If a company is loading the compensation in other ways and coming in light on salary then their job posting becomes much less compelling for job seekers. So they have a choice: disclose the other compensation (in order to compete with the salary numbers of the other companies) or adjust their compensation to be heavier on salary so their numbers are in line with others.
And equivalent to 0 cash for paying the rent. I suspect that’s why it doesn’t seem to be a prominent concern in discussions about tech compensation.
That is me - what is the above worth to you? If you are risk adverse like me, then you like that plan. Others want the cash now but can accept the risk of losing their jobs. Some have a high risk tolerance and like getting their money in stocks - in the best case this is the most money, but in the worst case it is the least. There is no right answer.
In the end you need a certain amount of money to live. That is different from your actual value.
This strategy is getting reamed this year, but it's historically been a good bet about 85% of the time.