I have a theory that even though we talk about halving the issuance rate every 4 years, the BTC price is just as much influenced by the amount of coins lost day by day.
No, what influences the price of BTC is the 4-year cycle aka block halving, positive news, mining difficult level, and level of greed in the market. The lost BTC only increases the total number of BTC in circulation.
The lost BTC somewhere impacts the price but not in the way you proclaim it.
I've read analysts estimating even around 6M bitcoins are likely to be lost forever. Those are horrendous numbers. But surprisingly in contrast, I've never seen anyone put the average of lost BTC estimations over time on a chart.
If there's no evidence backing the claim of lost BTC to be 6 million, I will advise you not to believe in the information because 97% of all the so-called analysts of this day create hype content just for their selfish benefit.