The one thing I hate about presentation systems like google slides is they seems to be highly allergic to accuracy and consistency.

If you're looking for careful consistent alignment with margins, fonts, and sizes respected, then you're in for a hell of a time.

You try to align things and they get fractions of an inch off or one slide is pt size 18, then then next is 18.5 or there's alignment that's the baseline as opposed to the whatever the line below letters like p q j use ... it's constant monitoring and watching, flipping back and forth making sure it didn't just "smart move" shit around the screen trying to help me out.

Then there's other things, like you're trying to move something and it selects the ruler guide instead. Can't you just lock those down? (the answer is NO)

It's really insane. They appear to assume I'm not serious about professional style and consistency.

And yes, I've tried editing the theme, going through online guides, reading the documentation.