The link actually works (for me), but calling it "slow" would be the understatement of the year, so far.

It loaded in just over three minutes (yes minutes) for me, with these timings according to Firefox dev tools:

    Request Timing
    Blocked:        31.73 s
    DNS Resolution: 1 ms
    Connecting:     155 ms
    TLS Setup:      31.57 s
    Sending:        0 ms
    Waiting:        2.43 min
    Receiving:      107 ms

This is on 100/100 fiber.

archive mirror works

https://web.archive.org/web/20210107044419/https://www.caldi...

Same in Safari and Firefox, so probably nothing to do with Chrome.