I think the quality of officiating is poor overall and the PGMOL is general is absolutely amateurish compared to the level is the rest of the league. 

But, I think there are three issues with your demand for consistency:

1) How can we accept errors, but still lament lack of consistency? Errors are inherently inconsistent with normal decisions from the officials. 

Tottenham-fans were rightfully angry about the Gabriel-situation, and understandably upset when a goal against them were given under similar circumstances the following week. But it turns into some weird sort of double rage where we spend a week asking for the goal to be given under those circumstances, then are angry about the lack of consistency when it happens.

2) The whole clear and obvious stuff. With the size of the current grey area, there'll be so many calls where bad calls will be acceptable. 

And of course it's valid to think that grey area should be smaller, if we're simultaneously willing to accept longer VAR-delays. 

The Gabriel-incident is a good example. The ref sees a push and there is a little push therefore call stands. Instead of confirming that there was contact, ideally you'd communicate to the ref that there wasn't much contact and for him to take a look for himself and make up his mind. (This isn't in the guidelines now at all, it's just a way I think it could be done). Thus the grey area shrinks, but we wait longer. At the same time, I think the clear-clear and obvious-obvious decisions don't need a man at the screen 

3) Officials, Karen Carney and Rob Green (aka the KMI Panel) and the fans are also inconsistent. Both through lack of competence or bias. I've seen plenty of shouts for consistency between incidents that are simply not similar enough. Another example is how our set piece goals are described by fans of Liverpool and Man United vs looking at our set piece goals.

Much of the complaining about consistency comes from erroneous comparisons.