Yeah, people see China sending stuff to Russia and think they're helping, because they've been told they're "allies". China is gaining a lot from Russia's failure though. If they don't actually take over land by the end of this, they will effectively control all the resources in large parts of modern day Russia.

I saw a comment not too long ago about how China should convince Russia to get out of the war, as if it's harming China. People just don't understand the geopolitics going on. I don't expect them to, but people should at least be aware no state is doing anything out of kindness. It's always at least attempting to benefit themselves. For Europe, Ukraine losing would be a horrible result, for example. There may be a humanitarian aspect, but there's always something being gained.

The main difference between WWI and Today's trench warfare the the level of intelligence available, combined with the ability to precision-strike.

It's interesting because drones are very mobile, able to be deployed close to the front, and extremely deadly, but simultaneously limited. The heavier payload ones can also be longer range, but counter-UAV technology (mostly jamming) makes these harder to use. In comparison, the shorter-range drones can be sent via cable - impossible to jam, but limited flight distance due to the trailing wire + weight.

The application of drones on the battlefield also favors the defender. The small-payload drones are exceptional at taking out moving vehicles and light infantry, and overhead imagery (via drone or satellite) is nearly omnipresent. With neither side able to secure complete air power, the normal target softening approach of airstrikes followed by troop movement isn't viable, and then drones take out even the most spread-out groups moving forward. The result is that the doctrinal 3:1 attacker ratio that favors defenders is even more lopsided with drones. I fear that we'll see a greatly increased use of autonomous weaponry as a result, which is extremely dangerous for humanity.

Why would that be, that drone warfare advantages defense?

For an offensive action you need to concentrate enough forces and material in one area to achieve a breakthrough.
In Ukraine, there is now a "grey area" between the fronts which neither side controls but is permanently patrolled by drones, similar to WW1's "no-mans-land".
It's up to 20-30km wide, and any vehicle entering it is destroyed by drone swarms.
Crossing it on foot takes up to a week, and less than 10% make it through alive.
This makes it impossible to bring heavy equipment to the actual front line for an assault, or even re-supply your soldiers hiding in trenches there.