The total amount of supply doesn't matter much. What matters (both for the employer and the job-seeker) is the ratio of supply to demand.
E.g., let's say JavaScript has the most demand of any language and there are 2 zillion job openings. This sounds great for job seekers initially, but what if there are 5 zillion JS devs seeking jobs? In that case job hunting might be very difficult. Similarly if there are 100 remote positions open in Pony, but only 10 Pony devs available to fill them, job hunting might not be so difficult.
There are some liquidity advantages in absolute scale, but for the most part it's the ratio of supply to demand that matters and not the raw numbers.
> If there are 2 zillion positions available, there’s a much larger chance to find something in my area and meeting all my requirements/wishes. But if there are just 100 jobs, I might end up without a job, or with a job I’m not very happy about.
If there are 5 zillion candidates seeking those 2 zillion positions, it's a much smaller chance you'll get one you want. You might end up without a job, or with a job you're not very happy about.
BTW, If you're in Colorado, go to Elixir Conf in a month! https://2022.elixirconf.com/registration
Restaurant A has 10 seats and 5 customers who just bought a meal and want to dine there.
Restaurant B has 20 seats and 50 customers who just bought a meal and want to dine there.
Which will be easier for you to get a seat in? The answer is Restaurant A, even though it has a smaller supply of seats. This is because supply and demand both matter!
Yup, there's a better chance that ten of those 2 zillion positions will be in Colorado. But there's also an equal chance that 25 of those 5 zillion other candidates will.