I would like to pitch in and claim that these arguments don't really hold any value as you both have not debated the subject but rather focused on arguing.
Making a claim that tinnitus is easier today without proper explanation is conjecture at best.
For a start we need to define the "olden" days.
If we are talking hunter gatherer societies then probably tinnitus was a very rare occurrence, and one habituated easily because of constant movement, space and natural sounds, wind, crickets rain etc. Hunter gatherers are also very healthy individuals due to less toxins, proximity to environmental issues.
Pre-industrial revolution there was most likely WAY less tinnitus than today also, and again the limited accessibility to ototoxic chemicals, fumes and drugs probably helped with the severity or occurrence greatly. Again greater connection and accessibility to natural land would have helped in habitation.
Today we have to deal with many multiples more people engaging in loud construction, unregulated decibel limits (think fire alarms), cars breaks screeching, constant fumes from cars, toxic medication, toxic chemicals, parfums sprays etc, ototoxic medications, many medications which have very little longitudinal study and the candy like dispensing of anti-depressants, opioids, accessibility to alcohol and other man made drugs. Comparative loneliness and isolation, even in highly populated areas, rise in co-morbid conditions due to aforementioned issues.
The list goes on. While we have better health care all around, and might not die from infection and have longer life spans, it is really early days for many conditions ironically many of which are probably a product of modern living.
I for one have three conditions that barely anything is known about and can cause a great deal of suffering. One of those is tinnitus and was likely caused by medication.
You can't say that people suffered more, when it's highly dependent on what that person is experiencing (their sensitivity, brain construction), their environment and support.