Learn to hunt for these, Find out if there is enough borrow, Use brokers who have a good inventory. Don't use Popular brokers for shorting Microcap. Not everyone carries inventory.
You can still short this, by selling into strength.
1. Margin requirements to carry multi day shorts
2. Minimum $/shares limits to short
3. Cannot hit the bids anymore, you will have chase with limit orders.
Shit gets really annoying these days. Wish my primary brokers will let me short those with no bs rules.