In my experience, it mainly depends on three variables.
First, is the sequencing technology; PacBio HiFi can produce high-quality reads, the same quality as Illumina in some cases. MinION is still a different story, I've attended a couple of workshops recently, and it seems like the recent chemistry has substantially improved. But not enough for de novo assemblies without the need for polishing.
Second, the coverage. In my experience, you might not find any difference in assembling 50X PacBio Hifi versus the polished version (bacterial, or short genomes). It is different for minION, for the reasons listed above.
Third, consider genome size and complexity. For instance, it's not the same to sequence any chromosome of the human genome as it is to sequence chromosome X or Y, which are full of repeats and have a very low %G+C. You'd need higher coverage and longer reads for those. So, yes, size (and complexity) matters.
I wouldn't say there is a general rule, nor it is a "best practice" to do it by default. Every case is different and is worth it to analyze them independently.
Hope it helps.