On a general view, this might not be the best time but a good time to invest in bitcoin. I agreed with you in your other expression, in as much as an investor may decide to buy bitcoin at this current price, it is not possible to predict the future with certainty. Considering volatility and price fluctuations of bitcoin which can significantly take place within a short period, your DCA strategy is there to mitigate your risk tolerance by making your bitcoin purchase of weekly or monthly with an allocated % of about 5 to 10 based on your income flow with your emergency funds set aside for your unforseen circumstances enabling you to remain focused in your bitcoin accumulation journey.
There is no best time or best price to buy Bitcoin as any price and time is good provided you have a long term view to Bitcoin investment. If you are waiting for the best time or best price to buy, you may likely not buy it. When Bitcoin got to $500, I'm sure there were people that said it was too high priced to buy. Same thing happened when it got to $1k, $3k and even $10k. This pessimism and procrastination will not stop even now so I'm not surprised when some people feel now is not the best time or price to buy.
I have the feeling that in the future, those thinking that now is not the best time or best price to buy will look back and said they wished they had bought Bitcoin when it was at $43k, this is a possibility because Bitcoin have the potential of making it happen. Check the growing interest bearing in mind that it has a maximum supply that will never be exceeded. You can see the potential of Bitcoin and the need to join the party as soon as you can if you have the resources and means of joining.
Your right on this, I also think that a time would come when accumulating bitcoin would be even more difficult than this , cause as price continues to increase one set of persons are benefiting which are those that already have bitcoin in their possession and new investors or persons just making the decision to invest would have to buy bitcoin at a higher price than it is now and history has proved this.
So with every passing year those who hold bitcoin continue to be amongst the people that would benefit more than even those that trade bitcoin which are not actual holders and cannot gain if bitcoin gains more values or even short term holders.