100% agree. Also consider that tables, uniquely, size to their content. So a cell's width is actually the width of the widest cell in its column; the cell height is the height of the tallest cell in its row. It's a problem with so much hidden complexity, and people who come up with these beautiful table designs genuinely do not understand the hidden challenges of implementing it.
Exactly, non-fixed row heights / column widths are a performance nightmare. I have managed to create a super fast Javascript Data Grid. There are many performance tricks, but the first thing I decided was to give each column a fixed with and each row a fixed height. Here's a One Million Cells demo that shows its performance: https://www.datagridxl.com/demos/one-million-cells.
