No, 5.10 is far too new for the sort of hardware that needs an LTS kernel. 4.19 caused breakages for a variety of AMD GPUs. The only other option really is 5.4, but we have no idea what the impact of that big of a jump would be for the hardware currently on LTS.
As @Harvey mentioned, 4.14 is supported until 2024, so there really isn't a rush for us to make that sort of decision. Not saying we want to kick the can down the curb that long, just that we can. Frankly with all the silicon shortages, supply constraints on various hardware, financial impacts of the pandemic, etc. some may just not be in the position to upgrade their hardware even if they wanted to. So why suddenly introduce the potential for breakages for those systems that otherwise work today?
