People who are afraid of bears are people who will become victims of losses so they will always complain when the market conditions are like now even though this is also a good opportunity to get more profits when the market starts to stabilize.
Yeah, they only want to see the pump but not the dump. This is common to the market whether you hold bitcoin, ethereum and any other cryptocurrency.
They're all bound to have the same scenario and it's up to you how you will maximize that moment of taking profit or buying at the cheapest price if ever all of you sees that.
I personally don't see a lot of hazard in Bitcoin or Ethreum long term. Assuming you're believe in a coin long term, enough not to sell at a loss, purchase more at the least in the cheapest price.
I'd also avoid comparing any other cryptocurrencies with Bitcoin and Ethereum too quickly. Over the years we've seen 99%+ altcoins fail, and fall out of the Top 10 or Top 100 only to be forgotten about and continue to lose value against BTC and ETH, struggling to regain their USD value with the weight of selling pressure at higher levels. So there is a reason to be cautious in bearish conditions, that could lead to another multi-year bear market, with altcoins that have yet to prove their relevance. Even project with good fundamentals and great tech die in bear markets, never to be seen again, simply due to selling pressure.
I remember in 2018 when people continued to invest in altcoins as they fell, it was only by 2019 when Bitcoin reached $14K and their altcoins had dumped even further they realised their mistakes. Holding coins that have a long price history of bouncing back, such as ETH and a few others, makes a lot more sense than ignoring emerging bear markets in altcoins. It's not worth simply buying more if you haven't taken profits.