Odds are bitcoin price also drops at it's halving as a lot of miners are going bankrupt and have to sell off the holdings.
Halving never meant shit for shitcoins like ltc and bcash (and bsv) with no real trading volume. Halving didn't (and won't) work for them because nobody cares about them. No real demand you'll find there.
The difference between shitcoins and bitcoin is the huge demand difference.
Bitcoin is still the main one which gives a direction to the markets. If "halving" combined with this huge demand doesn't move bitcoin upwards in a reasonable time frame, it still doesn't mean bitcoin is like these shitcoins I mentioned above. It just means halving doesn't have the bull effect on the markets like we think it has.
Shitcoins will have no real demand forever.