Dataview hasn’t been updated since June; Datacore since October.
Datacore was originally slated as offering ‘early releases available in Obsidian in late January 2023’, but nearly two years later it is still not available natively in Obsidian other than through BRAT.
Having installed community plugins and themes in the past that have since been abandoned, I am paring back my vault as far as possible to only use core assets. And hoping, obviously, that the Dynamic Views core plugin will do enough to replace Dataview and Datacore in the future.
While I like the idea of Datacore and applaud the aims of this thread, I think that anyone new to Obsidian should be aware that they might install plugins that don’t have the ongoing development more-likely to be offered by core plugins. No criticism of community-plugin developers, but if they don’t want to or can’t maintain plugins in the future, users can be left facing significant amounts of work to sanitize their vaults. If I was starting from scratch with Obsidian, I would not install any community plugins or themes, and I would not faff around writing custom CSS that can break when Obsidian is updated. As an aside, the erratic and painfully slow development of Scrivener—largely dependant on the whims of one core developer—drove me to look for alternative writing apps and to install Obsidian.
In recent weeks I have cleaned out over 700,000 words of Dataview queries, and I still have thousands of queries in my vault that I am trying to rationalize in readiness for Dynamic Views. I also have a mountain range of inline key–value pairs that I am painstakingly having to move to YAML headers / Properties. I initially planned to switch from Dataview to Datacore, but knowing how Dataview is no longer in primary development and that Datacore development is not as it was originally touted to be, I am now working towards whatever Dynamic Views will offer. I am assuming that Dynamic Views will have long-term development, whereas Datacore might or might not. More-than once bitten, finally more-than twice shy. I am slow to learn, it seems.
I imagine that competent coders who use Obsidian are more relaxed about dealing with the aftermath of plugins that are abandoned. As a barbarian, I am not in that group. 