I do think that it's a good idea to accumulate during the bear market phase.
The only way that you lock in your losses is if you realize them by selling at a lower price. If you keep your position open through the thick and thin then you are much more likely to come out on top at the end.
There are a lot of new money that flooded into the crypto ecosystem during this bull market, which really shows as people are panicking over this 20% drop over the past week. Nothing to be concerned about.
Bear market means the prices are low so you can make profits by buying assets at low price and sell them at high prices the. How can you claim that its not a good idea?
Its risky though but will have the rewards for doing it but never forget that it will not apply for the shitcoins which once falls then it may never recover from it in the next bull market.