Do you really notice it with streaming? I have 80Mbps cable, and nothing has ever slowed down.
If I download something over a couple of gigs I just get a glass of water and it’s done.
Bufferbloat was horrendous with Comcast so latency varied wildly depending on what was happening on the network. The only way around it was to cap download and upload to 80%, and that's a large dent on the already anemic upload. And I had to cap client upload too, otherwise one client could easily saturate upload and now not even TCP ACK packets were being reliably sent.
The main problem isn't cable per se, is the asymmetric link.
EDIT: Also 1Gbps symmetric allows me to backup my NAS offsite without impacting anyone else.
I've never heard of a fiber connection with a data cap like that. I ended up moving to fiber eventually, it was cheaper for the same speed and the upload speed matched the download speed as well.
What I did notice was the 1mbit/s upload speed that came with it. Uploading large files to Google Drive was impossible, not just slow but would actually time out, plus bad things happen when you saturate the uplink that way.