Op is probably trying to point out that in the first 19 years of Bitcoin we hit 97% if the total circulation, but it would take us another > 100 years to get to 100% of the total circulation. It means that sometime in the next 50-60 years, fees should have already become more valuable to miners than the reward and the network should have efficiently transitioned to function as such.
Traders and speculators will also need some adjustments because the impact of halving on the market and the '4 year cycle' rhythm may already be disrupted significantly
While any halving is supposed to create scarcity and increase demand for BTC, there is also a sense of urgency created by investors during the time of and after the halving and thus, the price of BTC increases even higher
when whale investors demand, Old merchant bitcoiners, new investors and bitcoin ETF holders, all demand to HODL or invest in more BTC.
It would take approximately 115 years, 9months and 7days, if we were to be more specific when BTC gets to complete 100% of total amount in circulation, but if after the next BTC halving we have to wait for 116days for it to have gotten to the 97% Bitcoin limit ,that means BTC must have achieved its aim and goal of getting to or nearing the 21million BTC and that's a wrong calculation, unless you meant something else which isn't clearly defined in your story.