CMS vs. Native?

Question

CMS

I have been creating sites on 1s-Bitrix for almost 1.5 years. And suddenly the thought comes to me to get certified in php. Passed a test of 45 questions with a result of 15. Saddened. I was even more saddened when I saw that I had already passed this test a year earlier and the result was 15. Question: how does website development with the help of CMS affect general knowledge of PHP?

Answer 1

How does website development with CMS affect general knowledge of PHP?

you see the test results - no way. Neither positive nor negative.
The knowledge of the language is affected by the tasks that you solve with the help of this language.

Answer 2

Of course it does.