I see one odd thing.
This individual scope was made one year ago.
(how did you find this old unit? I understand if you have made this video nearly one year ago but... )
First I regognize it from back feets. There was no rubber pieces installed at all.
Then I look more carefully and it looks like manufacture lot have been 122? (year week)
Perhaps old FW? (I can see some bugs in video)
In zoom mode it also increase samplerate. Many oscilloscopes with windowed zoom do not use higher samplearate in the zoomed area in window mode.
In test with glitches. It looks like (but too small amount of time in viedo so it is now only "feel") it sometimes trig to glitch more fast than if think update rate is always around 35 or less per second with long real visible blind time. (also this is proofed in tests using "marmad's double pulse method")
There is not any kind of tests for front end noise levels, no frequancy response test, no rising time test, no measurements accuracy tests, not trigger jitter tests, no FFT mode dynamic range tests. Total lack of any kind of lab tests for signal capturing quality. Only some waveform update rate test but also no any comment why it show this glitch more frequently that if it is really always under 35wfrm/s or less. Perhaps secret is in table what is published after tests with marmad method.
But, as all know it is not made at all by DPO principle. It IS pure DSO. (ref. Tektronix XYZ)
This is not for glitch hunting.
Time when this scope have made there was not example Rigol DS2000 series afaik.
So, comparing to much more new designed scopes is not apples to apples.
About vertical fine adjust. Most economy level digital scopes do not have real fine adjust. Just only "pixel zoom" what do not give anything more than magnifier class over TFT. Example measurement accuracy/resolution do not grow. If voltage fine adjust is done in analog front before ADC, it may give real advantage.
And nearly same for horizontal fine adjust. What advantage it give as long as it is just only same sample points positioned differently on the TFT. Just nothing more. In analog oscilloscopes these fine adjustmets are really different. In most digital scopes they are just cosmetics.
Why there is nearly total lack of any real lab tests
(and not only in this video, in nearly all videos, nearly total lack of any real lab tests with real data. I can see reason is not lack of good test equipments. So, why do not use these?)