請教經驗壇友：關於GAP in Trading

I heard it's a common belief in technical analysis, all gaps would eventually be filled. 

However, I've noticed, at least in PLTR and TSLA trading history, that it's often the contrary: not all gaps have been filled at all or just partially filled, especially this year (when I can spend more time on stock market and pay attention to more details) ... 

I want to learn, does this suggest:

1) PLTR and TSLA are simply /uniquely 不按常規走的股（好比他們的CEO 性格 哈哈）

2） because this is a bull cycle?

3) the necessity of gap-filling might be more of a myth than a rule in any kind of market.

 

Thank you. Have a wonderful weekend.