Yeah great stands but awkward to handle as heavy combined with unwieldy.
To be fair, this is sort of a characteristic required for a decent stand. It needs to be solid and able to safely support a load that may not be entirely centred.

And they're only awkward and heavy compared to lesser stands, that are lighter and don't hold as much.

Look at what 100kg or greater lifts look like and weigh. The ST's are a dream compared to an AlpTek or similar.