According to Tier 1 manager and guru of trading card games Kona Cordell, its not just because people were bored at home and got back into Pokemon Cards, although that was part of it
First look at Pokemon Center Tohoku, Hiroshima and Fukuoka Pikachu Promo Cards
On the flip side, a Standard landfall deck running Azusa, Lost But Seeking may run several playsets of modal lands on top of a higher normal land count to guarantee hitting extra land drops to enable Omnath, Locus of Creation
Another thing to consider is playing cycling lands like Tranquil Thicket or Indatha Triome
[9] Rule of thumb: Aggro decks need fewer lands and big decks need more lands
If you're playing a lot of small creatures, or maybe a commander like Adeline, Resplendent Cathar , then you'll find a lot of opportunities to draw cards - you might even be able to draw cards on opponents' turns with a bit of creativity