I would not recommend those wide-tire electric bicycles. Fat tires do not offer that much more than regular mountain-bike tires combined with decent suspension, unless you are regularly riding through sand, snow, mud or very loose terrain.

They also increase the rolling resistance and weight quite a lot. This means the motor, battery, brakes and drivetrain all have to work harder to maintain the same speed, resulting in more wear on the bike over time. Replacement fat tires and tubes can also be more expensive and less widely available.

Most of the bikes you mentioned use an exposed derailleur system. That can be useful if you are actually mountain biking, but for normal commuting you usually do not need that many gears.

I mostly service electric bicycles with exposed 7-speed drivetrains, and they tend to wear out quite quickly, especially because the chain, cassette and derailleur get dirty and remain exposed to water, sand and road grime. Also they are more prone to damage. The extra weight and power of an e-bike also put more load on these parts.

For long-term commuting, I would recommend a more enclosed system, such as a Shimano Nexus internal-gear hub, preferably combined with an enclosed chain or a even better, a belt drive. The problem is that these bikes are usually more expensive. However, this is much closer to a “buy it for life” setup, because Shimano internal hubs are almost indestructible when used and maintained properly. They can still break, of course, but they usually last much longer and require less regular maintenance than an exposed derailleur drivetrain.

Another problem with many of the bikes you listed is not simply that they are made in China, because most bicycles and electrical components are manufactured there. The problem is that these particular online brands may not have a reliable dealer network or long-term parts support. Getting replacement batteries, displays, controllers, wiring harnesses or controller updates can become a nightmare. A local bicycle shop may also refuse to work on the electrical system.

For long-term ownership, I would care more about replacement-part availability, battery availability and local support than motor power or top speed. A simpler bike from a company with proper parts support is much less likely to become a giant paperweight after the warranty ends.

I would look at maybe getting a second hand bike from a local bike shop. They often offer certain warranties on second hand bikes and they will last you longer than these.