This is what I see on the first page of the log in your demo.
https://imgur.com/a/S1QkzuG
It can look a bit better with more config for these 3 other tools but these are pretty much what they're and the readability isn't any better than tail/grep.
- Graylog : https://adamtheautomator.com/wp-content/uploads/2022/02/imag...
- Grafana : https://grafana.com/static/assets/img/blog/logcontext_explor...
- Kibana : https://blog.ip2location.com/wp-content/uploads/2018/12/logs...
Comapred to displaying structured logs in Metabase. (This isn't text logs but you get the point.)
- https://www.predictiveanalyticstoday.com/wp-content/uploads/...