High bandwidth demands by idleassetsd continues with Sequoia

Continuing a thread "High Band With "idleassetsd""... for the Sequoia OS,

Problems described in this discussion thread (for Sonoma OS) continue after upgrading a 2019 MacMini to Sequoia.

High Band With "idleassetsd" & "nsurlses… - Apple Community

Summarizing my current experience on Sonoma, from that thread:

• idleassetsd wants to download a huge pile of data from the site sylvan.apple.com. These are movie-screen-savers.
• it wants to download these files even if I do not have any movie screen savers selected. I just have a static photo background and simple screen saver.
• If I find these movie files and delete them, it re-downloads them
• If I force-quit the process idleassetsd, it restarts and resumes activity immediately
• I sent my WiFi access to Low Data Mode, it makes no difference
• Data downloads (as tracked by "Activity Monitor -<> network" and the LittleSnitch firewall, used to show downloads of 20GB, 30BG, up to 62GB of data under Sonoma (14.7 most recent). These are untenable on slow DSL.
• I don't live in an area with fiber connection. I drive 90 minutes to get access to a fiber data connection for upgrades. I have 4Mbit down / 515Kbit up speeds on aged copper DSL, with no alternative in sight. (waiting for a promised fiber upgrade in my area for a few years now; dislike satellite).
• After a major upgrade on fiber, I try and wait for idleassetsd to start and complete. Somethines idleassetsd does not immediately start downloading, it might restart hours or days later.
• On my DSL speeds, the forced downloads take forever; poor streaming TV (to Apple TV), interrupted podcasts and podcast downloads. When I complain to my service provider about poor speeds, they say "you have higher than normal data usage, and live with what you've got."

Here is some new behavior I see.

• When LittleSnitch firewall is set to deny idleassetsd access to sylvan.apple.com, the network traffic stops, but idleassetsd freaks out and makes 1000 network access requests per second. This then spikes the process CPU utilization in Activity Monitor -> CPU to 163 %, it becomes the top CPU consuming process, and the Mac mini (2019 edition) becomes very, very hot. So if I use the firewall blockage long term, I suspect I will burn up my Mac mini (Apple won't cry about that. CODE ERROR!, this is a bug, considering how non-essential this process is).
• If I disconnect all network access (unplug ethernet, turn off WiFi) idleassetsd exhibits a memory leak issue, but CPU utilization falls to a low level. As seen in Activity Monitor -> Memory, it starts using a small memory, and within a few minute is it the top memory user and keeps increasing usage ticking up linearly every 5 seconds.
• After recent upgrade to Sequoia 15.0.1 the downloads continued and problems described above remain unchanged.