In general, I agree. However, many older cars were small, light, simple, and raw - characteristics that have largely disappeared from modern cars. Automatic transmissions from the mid-90s and earlier generally sucked, though good old manual transmissions are not much different from good modern ones.
As an example, I owned a W126 S class from the late 80s, and it was fun in its unique way and no modern cars replicate its experience. It had somewhat heavy and very feedback rich steering feel, and Porsche-like firm and tactile pedal feel, while having a super supple ride over the most awful roads with SUV-like ground clearance and tremendous suspension travel. The car was also super simple and reliable; my 300SE had nearly 400k km with all original powertrain when I sold it, it never let me down, and it weighed less than a modern A class or CLA. While not as safe as modern cars, it was exceptionally safe for its era and comparable to normal cars of the early 2000s for crash structure safety.
The W140 (I used to own one too) had a much better powertrain, but it lost the raw tactile scrappy nature of its predecessor, and nor could it handle super awful potholed roads as well as the W126. There are no modern cars that combine the rich raw tactile control feel and super supple ride the W126 had.
Look at cars like the BMW E30, or Mercedes-Benz 190E (W201), or the superbly engineered workhorses that the W123 and W124 were. There are no modern cars that replicate the genuinely delightful driving experience of those.