It's a matter of personal preference.
ANYTHING can be dangerous if used carelessly.
Loading blocks do not imply that one necessarily dispenses powder into all cases while in the loading blocks before seating a bullet.
If loading blocks DO indicate some manner of OCD - nothing wrong with that. We all have our personal voodoo, which may or may or may not make our ammunition any better or more accurate, but it makes us feel better and induces confidence.
I've not used my bench-mounted press in some time now, so I've used the bins a bit less lately. I do the batch thing with brass, up until I charge the cases/seat the bullet. Whether using the bins or the blocks, I charge a case, seat a bullet, place the cartridge in a bin, or block, depending on what it came out of.
When I am doing ten or twenty rounds with the Hand-Press or 310 tool (my new favorite way), I prime a case, set it into a block, primer up. When it's time to charge the cases, I remove the upside-down empty from the block, charge the case, return it to the block, right-side-up. THEN, I check all ten or twenty with a light and set to seating bullets.
Using the blocks for small quantities provides a means for me to keep track of what I've loaded, because I may do ten with 4.0 grains of Unique and then ten with 4.5 grains of Unique, or a different powder or bullet. I number/letter-stamped the rows of five holes and I record what is in each row on a load sheet I developed in an open-source spreadsheet program.
I don't get significant blocks of time to isolate myself and engage in this endeavor, so these are things that help me keep track of things between (short) sessions. This is also where the hot-plate and PID come in handy while casting. IT would be nice to have longer blocks of time or to never be interrupted, but as a 24/7 care-giver, that's impossible and I am not sooner going to just give on one than the other, but if I had to give up one, it wouldn't be care-giving.