Hmm. That behaviour, and others like it involving ETFs, I've never understood.
Some people believe "you can't beat the market". So index ETFs are perfect for them. Other, such as momentum and value investors, believe insightful stock picking can outperform the market. So they buy individual stocks.
The group that doesn't make sense to me, are people who are active investors, but buy ETFs and trade them in and out. If you believe you can gain alpha through your picking skills, you'll get a much better rate of return buying individual shares over ETFs. By definition, ETFs are a bundle of shares, so there's going to be a portion of bad stocks in there. If you believe in your picking skills, then you can just own the best share of those ETFs, directly.
But if you think buying individual stocks is too risky, then that's a statement that you don't believe in your active picking skills. And that's fine. But then suddenly, you believe in your ability to actively pick ETFs?
I believe this has come about because people have been taught that stocks are risky and ETFs are safe. OK. But ETFs are safe only if you treat them passively and buy and hold them for long periods of time.
Trading in and out of ETFs, you expose yourself to selection risk, and market timing risk, but you're not rewarded with the potential for massive market beating runs (at least of the short term) that selecting individual stocks can give you. Personally, I don't see that the risk:reward ratio of trading ETFs is worth it.