Travel to Switzerland during pandemic

This is by nature going to be an opinion-based answer, but since I'm also planning a Switzerland trip in December, here's my take. The way I see it, there are five potential risks here.

1. Switzerland closing its borders. This seems unlikely: COVID is already endemic throughout Europe, so the additional risk of allowing travellers is minimal, particularly if vaccination is required (which is already the case).

2. Your home country closing its borders. Even less likely: in addition to the above, as a citizen/resident you generally have the right to return to your country even in times of emergency.

3. Switzerland locking down hard, eg. closing ski resorts, as they did last year. This, too, looks unlikely: unlike last year, vaccination rates in Switzerland are high, and most EU neighbors like Austria and Germany have explicitly stated that they intend to pursue policies that encourage vaccinations, instead of doing more blanket lockdowns.

4. Catching COVID in Switzerland and being unable to return. This is IMHO the biggest risk: if your country/airline requires pre-departure COVID tests, and yours comes up positive, you'll be stuck until you test negative again, which could be weeks (eg 14 days for Singapore). What this means for your job, school, finances etc will depend greatly on your personal situation.

5. Apocalypse risk. If there's suddenly a new Omega variant that turns people into zombies and spreads like wildfire, all bets are off. It's unlikely, but we saw many countries roll back opening when Delta came around, so it's possible.

All things considered, we're going ahead with the trip, but are taking the precaution of making sure our flights, hotels etc can be cancelled or at least moved free of charge, even if this costs a little more. Good luck!

I have just checked the 'travel to Switzerland' information available for Dutch travelers.
The whole of the country is coloured Yellow, meaning that we can travel there but there are some risks.

On that site there is a link to a site from the Swiss authorities and you can fill out some questions there and get advice.
I have done it, assuming some things and it is quite clear. I do not share the results as I had to assume too much, so the results are likely wrong for you.

I had a look at the local results for Switzerland, this page in English popped up. Their conclusion is that the numbers are still much lower than last year this time but the numbers are going up.

Do not assume that the situation now has anything to do with the situation in a few weeks, as covid reports are rather unpredictable. In the Netherlands we went from 500 reported cases per day to 10000 reported cases per day in the space of a week some months ago, the numbers went down and are now up again to that same high number. Not Switzerland but it can happen in that country as well.

My personal advise would be 'do not travel all the way from Indonesia unless you have a very strong reason to come this year.' Travel may stop between Switzerland and wherever you want to go next. Getting stuck in Switzerland for months would not be easy. And it might be that the rules from Switzerland will stop you coming, depending on where you travel from and your nationality, depending on your travel route and methods.