Perhaps it is the programmers' self-mockery at first, or it may be the subjective speculation of some ignorant people. Many people don't know when they began to think that the computer industry must be done by young people, and it is at the expense of overdraft.
This view is completely wrong. The computer industry works a lot of overtime, and the work is hard and tiring, but some jobs are more tiring than being a programmer. Some people say those industries eat youth?
Companies want young people because they are energetic, but that doesn't mean that older programmers are worthless.
Any development project always needs the guidance of experienced people, and so does the computer industry. An experienced old programmer is far more precious than a freshman who just graduated from college. If it is the same ability, of course, any industry is more willing to have young people.
The disadvantage of being old exists in any industry. If you can't make up for your disadvantages with your own ability, don't complain.
The computer industry in China started relatively late, which makes the whole programmer industry seem to be only young people. This is due to the special stage of development. It's not that the computer industry only recruits young people, let alone that old programmers are unemployed, just because even the first batch of programmers are still young.
Another reason for the impression of "youth rice" in the computer industry is that practitioners in the computer industry need to constantly update their knowledge.
Graduation from college is not the end of study, but just the beginning. The technology in the computer industry is changing every day. If you can't keep up with the times for lifelong learning, you will be defeated by young people who learn the latest knowledge sooner or later.
If you are eliminated for this reason, you can only say that you are not suitable for the computer industry, not that the computer industry discriminates against old employees.