It's constantly been peaking and collapsing since 2013, when there were no US interest rate increases. The 2017 peak happened in the middle of a US interest rate increase cycle. The 2021 peak happened 6 months before the most recent US interest rate increase cycle. I'm sure interest rates were varying in other countries on different schedules, but blaming a crypto market collapse on interest rate hikes doesn't seem to square with the data.