Dutch style bike is good but perhaps not an actual Dutch bike, they weigh an absolute ton.
They can do, especially the trado/cargo ones – but on a dead flat promenade it should make no difference, it also helps stability in winds and when carrying cargo. Trust me, as long-term RA-sufferer (cycling was part of rehab following remission) – the laid-backness is the big issue, the Dutch bike-weight has only been a positive (unless hoiking up steps, then worth looking at something like an Electra cruiser or alu dutch style with the geo I was talking about)
Also, my 1960s Raleigh Twenty weighed nearly the same as the Dutch bike! (Ok, 40lb vs 50lb, but at that point who’s counting 😂) – to be fair my steel Dutch is probably the heaviest you can get. You can buy alu ones around 14kg. But the pedal-forward/ geo is arguably the important bit and not even all Dutch-style bikes have that covered.
The Electra Townie has similar geo, maybe even more pronounced than the Batavus Personal, but it’s comparatively low spec. Could be a good option to buy and upgrade?