Qualcomm knows that updating older chips is complicated (and expensive) for Android OEMs. The company will make this a bit easier this year.
TLDR
A Qualcomm executive told Android Authority that the company is working to make it easier for OEMs to keep devices with older Qualcomm chipsets up to date.
The company understands that updating older devices is currently “complicated,” not to mention expensive.
There will be some announcements on this topic “later this year,” presumably surrounding the launch of the Snapdragon 8 Gen 4.
While I do not expect to see Android devices with future Snapdragon 8 Gen 4 chipsets immediately booting mainline kernels on release, this might be a step towards achieving something closer to that. Those efforts will certainly make it easier for phone manufacturers to release updated kernels, and therefore Android releases, for their devices, or at least stop using Qualcomm as the excuse for not doing so (see e.g. Fairphone 4's software support roadmap: https://support.fairphone.com/hc/en-us/articles/9979180437393-Fairphone-OS).