I mean, 2020 was practically always going to be a more lean year akin to 2018 for the Switch after 2019 had dropped so many notable releases. Remember, 2019 brought us New Super Mario Bros. U Deluxe, Yoshi's Crafted World, Super Mario Maker 2, Marvel Ultimate Alliance 3, Fire Emblem Three Houses, Astral Chain, Daemon X Machina, The Legend of Zelda: Link's Awakening, Dragon Quest 11 S, Ring Fit Adventure, Luigi's Mansion, and Pokemon Sword/Shield. A bunch of major titles that Nintendo had a hand in bringing to us either directly through development or publishing. That's a ton of their major studios releasing titles.
The current situation, while incredibly frustrating, does make sense in that context. 2020 hasn't been an awful year thus far. Xenoblade Chronicles Definitive Edition, Animal Crossing New Horizons, and Paper Mario: The Origami King are pretty big releases even if some people may not love them all or as much as other releases... but It's also just a side effect of Nintendo always playing incredibly close to the chest and COVID throwing off their plans across the board and requiring major reshuffling of their release schedule that they're probably not confident on. By all accounts, all parts of Nintendo save for Sakurai's team and other DLC productions, have been majorly disrupted and Nintendo has struggled to transition to work from home. With COVID-19 going to be a consistent reality for the foreseeable future that is likely to cause additional disruptions as cases rise and the need for lockdown measures return, Nintendo likely doesn't want to announce much unless they are certain the games will make those release dates. Even if some studios can resume development now, they might not be able to necessarily be back at work until let's say October of this year for a November release, and Nintendo seems to recognize that.
Not to mention, 2 months of lost development does not mean 2 month delays necessarily either. Nintendo has an entire release schedule that also has to take in consideration all sorts of their own titles as well as what they may be putting their own titles against on the market, so dates may be further extended out of an initial 2 month delay. Furthermore, if a studio has found a good work flow prior to having to stop, resuming that work flow is not always the easiest thing to do and often necessitates some additional time than what might have been needed had they been able to hammer away as normal. Add in the fact that Nintendo pushes quality titles above all else, and 2 months to consider how they're going to develop the game extra and all sorts of things may change for those titles.
It sucks we know so little, and I do think Nintendo's close to the chest mentality has come back to bite them in the ass with everything going on. But I also understand a lot of their hesitation right now.