Their hardware, sure. Software, not so much. Mi Home is an abomination.
That said, they are one of the few phone companies left that allow consumers to unlock the bootloader, along with offering some stock android models with zero bloatware and monthly security updates.
Samsungs are worthless now if you can't install Lineage on them.
When we say the word “system”, it means a lot of foundation of system design and practices.
China companies lag in system design, this situation is very clear now; Still the root cause of this lag is related to the outdated government system.