A cheap TRULY REFILLABLE roller ball VS the Bic Cristal ball point

UPDATE 08/07/2023: Here is a late but much needed report on how long lasting this pen is. I used this pen every day for many months for general writing. Refilled it many times. I discovered that after that much use the roller ball actually wears out. The fine lines it used to produce got thicker and thicker over time. Becoming more like a 0.7-1mm pen nib by the end of it. It was very slow and did take lots of use. But in hindsight this whole environmental aspect of this video seems rather silly. I'm just very biased against the Bic Cristal. I bought some cheap refillable "Fountain Pen-type Gel Pen 0.38/0.5mm Transparent Calligraphy Signature Pen Replaceable Ink Sac and Can Absorb Ink Pen", off Aliexpress, yes that's what they called it. Which is basically a truly refillable roller ball pen. Unlike most 'refillable' ball point/roller balls which use replaceable internal pens also known as 'refills'. I also talk too much about the Bic Cristal and then call the other refillable pen a ball point too because I'm dumb. Then I sketch some bad art. You're welcome.